South Georgia and South Sandwich Islands is about 19 times smaller than Panama.

Panama is approximately 75,420 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 5.18% the size of Panama.
Tip: This to-scale comparison of Panama vs. South Georgia and South Sandwich Islands uses the Mercator projection, which distorts the size of regions near the poles.
Compare further: South Georgia and South Sandwich Islands vs. Panama