(Reuters) - Tesla Inc (TSLA.O) made good on Chief Executive Officer Elon Musk’s promise that it would turn a profit in the third quarter as it ramps up production of its Model 3 sedan, sending its shares up 7 percent in after-market trade. REUTERS/Mike Blake/File Photo The Silicon Valley electric carmaker said on Wednesday that it made a net profit of $311.5 million in the quarter and had free cash flow of $881 million.