When a plan is approved, the officials approving the plan shall jointly issue an order of approval. The order shall specify the area to be merged, the maximum rate of tax to be levied for debt service and operation and maintenance of the proposed area hospital in the portion of the merged area within each political subdivision, the proposed location of the hospital building, the estimated cost of the establishment of the hospital, and any other details concerning the establishment and operation of the hospital the officials deem pertinent. The order shall be published in one or more newspapers which have general circulation within the merged area once each week for three consecutive weeks, but the newspapers selected need not be published in the merged area. The published order shall contain a notice to the residents of each subdivision of the proposed merged area that if the residents fail to protest as provided in this chapter, the order shall be deemed approved upon the expiration of a sixty-day period following the date of the last published notice.