A certified copy of the canvass of the votes of the election on the proposition stated in Section 7-2-1, made by the proper officers, shall be transmitted to the clerk of each municipality involved in the election, and to the county clerk of the county in which the election was held. Each clerk shall transcribe the certified copy upon his official records. The mayor or the president of the board of trustees of each municipality, if the vote is in favor of the union, shall immediately issue a proclamation declaring the existence of the union. The united municipalities shall be governed by Sections 7-2-3 through 7-2-27.