Shikhar Dhawan's 12th one-day international century steered India to an emphatic eight-wicket win in the series decider after Sri Lanka collapsed in Visakhapatnam on Sunday.
Sri Lanka were going along nicely on 136-1 in the 23rd over, but spinners Kuldeep Yadav (3-42) and Yuzvendra Chahal (3-46) did much of the damage as they collapsed to 215 all out.
Upul Tharanga fell just five short of a hundred and Sadeera Samarawickrama made 42 in a second-wicket stand of 121, but the tourists' innings fell to pieces and India eased to a 2-1 victory after losing the opening match of the series.
A masterful innings from Dhawan, who finished 100 not out off only 85 balls, sealed India's eighth straight series win in the 50-over format and Shreyas Iyer (65) struck back-to-back half-centuries in his first ODI series as Sri Lanka were given another harsh lesson ahead of a new era under Chandika Hathurusingha.
Sri Lanka recovered smartly from the early departure of Danushka Gunathilaka (13), with Tharanga particularly aggressive, taking Hardik Pandya for five successive fours in the ninth over before reaching fifty from only 36 balls.
Samarawickrama was put down on 29 - a tough chance to Dinesh Karthik at midwicket - but it did not prove too costly as he holed out to become Chahal's first victim soon after.
Tharanga brought up 1,000 ODI runs this year by hammering Chahal over long-on for six, repeating the feat in the leg-spinner's next over before perishing to Kuldeep, stumped by MS Dhoni as he stretched forward.
Niroshan Dickwella fell later in the same over and Sri Lanka began to lose wickets regularly, Angelo Mathews and Asela Gunaratne (both 17) the only other men to reach double figures as India turned the screw.
Rohit Sharma stole the show with a magnificent double century in the second ODI, but the stand-in captain fell for only seven when Akila Dananjaya bowled him with a delivery that drifted in.
Dhawan and Iyer were untroubled on a good surface, though, using their feet expertly against the spinners and latching onto far too many loose deliveries to put India well on course to reach their target.
Iyer outlined his promise once again, outscoring Dhawan and cashing in on Mathews' failure to hold on to a difficult chance at first slip when he had 25 to his name, smashing Sachith Pathirana for six and reaching 50 off only 44 deliveries.
Dhawan raised his bat after a slog-sweep for six off Dananjaya cleared the ropes and went on to pass 4,000 ODI runs after Iyer offered a simple catch to Suranga Lakmal off the bowling of Thisara Perera.
Karthik (26) successfully reviewed when he was given out leg before when the ball struck his inside edge before hitting the pad and another powerful sweep to the boundary took Dhawan to a deserved hundred as India sealed victory off only 32.1 overs.
|Whatever b******t you say, no one forgets – Klopp defends spending comments|
|Usyk outclasses Gassiev to make cruiserweight history|
|Pella books Cecchinato meeting in Umag, Ramanathan´s Newport run continues|
|Kisner expects nothing but exchange of ´horror stories´ with housemate Spieth|
|Inter new boy Lautaro Martinez denies Zenit in six-goal thriller|
|McIlroy eyeing early gains to apply scoreboard pressure|
|The Open 2018 diary: Spieth´s close shave|
|Salah is fully recovered and full of joy – Klopp|
|De Laurentiis accuses Sarri of trying to sign whole Napoli team|
|Lewis Hamilton explains German GP woes|
|O´Driscoll hails ´Test match animal´ Warburton|
|Spieth relishing prospect of Tiger tussle at Carnoustie|
|Sanches pushing for Bayern second chance - Kovac|
|Put on the Sunday red and enjoy Tiger´s ride regardless of Carnoustie outcome|
|Flawless Spieth takes share of Open lead after Tiger winds back the years|
|PSG´s Tuchel to be patient with World Cup stars Neymar, Mbappe & Cavani|
|Sanchez joins United tour in LA after visa issues|
|Catalans crush Salford to confirm Super League safety|
|Hamilton not giving up despite Hockenheim heartbreak|
|Spieth surges into Open Championship lead|
|Dumoulin is our biggest threat – Froome|
|Sane: Low gave me good reasons for World Cup snub|
|Tiger Woods in the hunt and loving it at The Open|
|Vettel delighted with German GP pole performance|
|Deschamps lauds intelligence of ´extraordinary´ Mbappe|
|Thomas maintains advantage as Fraile powers to stage victory|
|Woods sets clubhouse target, Kisner edges back in front|
|Bayern Munich 3 Paris Saint-Germain 1: Sanches strikes in ICC clash|
|Dost re-signs with Sporting CP after initially rescinding contract|
|Impressive Lions see off Jaguares to seal Waratahs semi|
|I´ll show Mourinho I´m ready, says United´s Pereira|
|Fognini sets up final clash with Gasquet|
|Injury ends Bouchard´s Swiss hopes, Sevastova through in Bucharest|
|That didn´t Work-u...race leader pulls up short of 3000metre finish|
|Prowling Tiger Woods on Open charge as Spieth joins leaders|
|Federer will struggle away from Wimbledon - Henman|
|Hamilton expecting tough Sunday at Hockenheim|
|Spalletti expects Icardi, Perisic to stay at Inter|
|Vettel smashes lap record to take Hockenheim pole after Hamilton woe|
|Warner targets Australia recall after Darwin debut|
|Rose: Open Sunday will be ´interesting´ after 64|
|Hamilton out of German GP qualifying as Mercedes falters|
|Pogba, Mbappe, Griezmann? Deschamps mulls Ballon d´Or contenders|
|Farah concussed on 250th Wests game as Tigers stun Souths|
|Waratahs overrun Highlanders in stunning second-half fightback|
|Rose scores record-equalling 64 to jump into Open contention|
|Moreno hails Liverpool´s recruitment drive as ´top, top players´ arrive|
|AC Milan elect new board with CEO Fassone out|
|Sri Lanka grind sorry South Africa into the Colombo dirt|
|Mina ready to reject offers for Barcelona stay|
|Guardiola tells Sane to use World Cup snub as motivation|
|Golovin´s ex-team-mate Chepchugov drops hint over Chelsea move|
|Reed & Rose make early charges on Carnoustie ´moving day´|
|Sancho ´had a point to prove´ in Dortmund´s win over Manchester City|
|Li hits back at AC Milan owners Elliott as bitter split continues|
|Crusaders cruise past Sharks to book Hurricanes semi-final|
|Rabiot would be a great signing for Barcelona – Xavi|
|JaVale McGee: Lakers are going to be ´one of the most fun teams ever´|
|Dolphins owner Ross: National anthem policy a ´placeholder´|
|Boga leaves Chelsea for Sassuolo|
|Schurrle in talks to leave Borussia Dortmund|
|Guardiola happy with Mahrez and Man City despite loss|
|Dodgers top Brewers in Machado´s debut|
|Raptors GM apologises to DeRozan after Spurs trade|
|Manchester City 0 Borussia Dortmund 1: Gotze spoils Mahrez´s debut in ICC opener|
|United fans keeping De Gea at Old Trafford – Herrera|
|Keita: I turned down Barca and Bayern for Liverpool|
|Merritt stays ahead as rain halts Barbasol Championship|
|Roma had to sell Alisson to Liverpool, says Totti|
|Donald Trump: Kneeling players should be suspended without pay|