The Cooperative shall not become a member of any other organization without an affirmative vote of the members at a meeting called as provided in these bylaws, and the notice of said meeting shall specify that action is to be taken upon such proposed membership as an item of business, provided, however, that the directors shall have full power and authority on behalf of the Cooperative to purchase stock or become a member of, invest in or otherwise participate with or in any corporation or organization where the Board has determined that participation in such corporation or organization is or shall be of benefit to the Cooperative, or with the approval of the Administrator of REA, to invest in or join any other corporation or organization for the purpose of acquiring electric facilities.