Huntington Bancshares said Wednesday that its third-quarter profit more than doubled from a year ago, helped by the acquisition of Akron-based FirstMerit.Huntington said it earned $275 million for the July 1-Sept. 30 quarter, an increase of $148 million from the same quarter of 2016. The bank's profit totaled 23 cents per share.Results would have been even better had it not been for $31 million in pretax charges tied to acquisition that reduced profit by 2 cents per [...]