There were no big winners in Tuesday's Mega Millions drawing, meaning the jackpot will grow to $750 million, lottery officials say. The new prize marks the fifth-largest jackpot in Mega Millions history, officials say. There was also no winner in last night's Powerball drawing, growing the pot to $640 million. While winning either jackpot would be nice, it should be noted it's far from easy. The odds of winning the Powerball are one in 292.2 million, lottery officials say. The odds of winning Mega Millions are even worse at one in 302.5 million, they add.