MADRID, Oct 29 (Reuters) - Spain’s BBVA on Friday reported its third quarter net profit rose 22.7% compared to the same quarter a year ago on lower loan loss provisions. The lender booked a net profit of 1.4 billion euros ($1.63 billion) in the July to September period, more than the 1.06 billion euros forecast by analysts polled by Reuters. The lender also said it had received authorization to buy back up to 10% of its capital for a maximum amount of 3.5 billion euros. $1 = 0.8570 euros Reporting by Jesús Aguado; editing by Inti Landauro