Pepsico Inc. Chief Financial Officer Indra K. Nooyi will replace Steven Reinemund as chief executive, the Pepsi-Cola and snacks company said yesterday, making her the No. 2-ranked female CEO in the Fortune 500. With her Oct. 1 appointment, Mrs. Nooyi takes her place in an elite group of 11 female CEOs running Fortune 500 companies. Patricia Woertz at agricultural processor Archer Daniels Midland Co. ranks first. ADM is ranked 56th in the Fortune 500, while Pepsico, the world's second-largest soft-drink company after Coca-Cola Co., is ranked 61st. "I'm very excited and at the same time very humbled," she told analysts...