What is the average Density when the area is more than 1,185.8 with a population of 63,029?
CREATE TABLE "by_population_density" (
  "rank" real,
  "province" text,
  "population" real,
  "area" real,
  "density" real
);
SELECT AVG("density") FROM "by_population_density" WHERE "area">'1,185.8' AND "population"='63,029';