The escape velocity for a spacecraft orbiting Earth in a geostationary orbit is the same as the escape velocity for any object at that distance from Earth's center.
A geostationary orbit is a circular orbit around Earth's equator at an altitude of approximately 35,786 kilometers (22,236 miles). At this altitude, the escape velocity required for an object to completely leave Earth's gravitational pull is approximately 10.9 kilometers per second (6.8 miles per second).
It's important to note that escape velocity refers to the initial velocity needed for an object to escape Earth's gravity without any further propulsion. However, spacecraft in geostationary orbit typically have velocities lower than the escape velocity because they are in a stable orbit, continuously circling Earth rather than escaping it.