The Earth for the Moon is a stationary object. Why is the distance of the Earth from the Moon (385,000 km) significantly

The Earth for the Moon is a stationary object. Why is the distance of the Earth from the Moon (385,000 km) significantly greater than the height of the stationary orbit for the Moon?

To calculate the altitude of a stationary orbit for a massive satellite, such as the Earth for the Moon, it is necessary to use Kepler’s third generalized law.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.