Solomon Islands is about 23 times smaller than Texas.

Texas is approximately 678,052 sq km, while Solomon Islands is approximately 28,896 sq km, making Solomon Islands 4.26% the size of Texas. Meanwhile, the population of Texas is ~25.1 million people (24.4 million fewer people live in Solomon Islands).
Tip: This to-scale comparison of Texas vs. Solomon Islands uses the Mercator projection, which distorts the size of regions near the poles.