First Solar Inc., an Arizona solar-panel maker whose only North American factory is in Perrysburg Township, on Thursday reported higher-than-expected second-quarter profits and raised its full-year earnings forecast. Its profit fell to $159 million, or $1.84 a share, from $181 million, or $2.11 a share, for the same period a year ago. Revenue rose 12 percent to $588 million. Analysts had …