1 EXHIBIT 23.7 [LETTERHEAD] THE CARSON MEDLIN COMPANY INVESTMENT BANKERS April 6, 1998 CONSENT OF THE CARSON MEDLIN COMPANY In connection with the proposed merger of Seminole Bank and F.N.B. Corporation, the undersigned, acting as an independent financial advisor to the common shareholders of Seminole Bank, hereby consents to the reference to our firm and our fairness opinion in the Form S-4 Registration Statement and to the inclusion of our fairness opinion as an exhibit to the S-4 Registration Statement. /s/ The Carson Medlin Company THE CARSON MEDLIN COMPANY