New York is about 4.2 times bigger than Solomon Islands.

Solomon Islands is approximately 28,896 sq km, while New York is approximately 122,283 sq km, making New York 323% larger than Solomon Islands. Meanwhile, the population of Solomon Islands is ~702,694 people (18.7 million more people live in New York).
Tip: This to-scale comparison of Solomon Islands vs. New York uses the Mercator projection, which distorts the size of regions near the poles.