DES MOINES, Iowa — No one has won the latest mammoth Powerball prize, so the estimated jackpot now grows to at least three-quarters-of-a-billion-dollars — $750 million — the fourth-largest lottery jackpot in U.S. history.

The next Powerball drawing will be Saturday night.

Wednesday night’s $620 million Powerball jackpot looked sort of puny given all the attention lavished on the $1.537 billion Mega Millions jackpot won in South Carolina on Tuesday.

Only five lottery jackpots have been larger than this Powerball, but with two giant prizes in one week, it’s hard not to compare.

No one has won the Powerball jackpot since Aug. 11, when a man from the New York City borough of Staten Island won $245.6 million.