The nearly $500 million Powerball jackpot tonight could leave a lone winner with an estimated $327.7 million lump sum payment – enough to buy the most expensive piece of art ever sold and still have $27 million to build a private museum for it. “It is the third-largest Powerball jackpot in the history of the multi-state game,” Lottery officials said in a statement about the estimated prize that stood at $485 million last night.