The jackpot for Friday night’s gigantic Mega Millions jackpot has climbed for the second straight day due to brisk national ticket sales — the top prize is now $1.28 billion. The cash option for the 10:59 p.m. drawing increased to $747.2 million. It will be held in Atlanta and will be televised on WABC-7 in New York City and Fox 29 in Philadelphia. On Thursday, the jackpot increased from $1.025 billion to $1.1 billion. The only two larger jackpots won in U.S. lottery history are the $1.586 billion haul split by three lucky winners — in California, Florida and Tennessee — on Jan. 13, 2016 and t…