third way

third way (plural third ways)

1. An approach or solution which strives for an alternative to or middle ground between two opposing viewpoints. [from 17th c.]

   Synonym: via media

   • 1979, John Le Carré, Smiley's People, Folio Society, published 2010, page 358:

     It is a place of no compromise, thought Guillam, a place of no third way.

2. (politics) An ideology which seeks to find middle ground between right- and left-wing politics, associated during the 1990s with various centre-left political parties in Europe, North America and Australia. [from 20th c.]
3. Used other than figuratively or idiomatically: see third,‎ way.

• golden mean