CREATE TABLE table_42486 ("Rank" FLOAT, "Province" TEXT, "Population" FLOAT, "Area" FLOAT, "Density" FLOAT)

What is the Density that has a Population larger than 290,458, and an Area of 91.6?
SELECT SUM("Density") FROM table_42486 WHERE "Population" > '290,458' AND "Area" = '91.6'
SELECT SUM("Density") FROM "table_42486" WHERE "Area" = '91.6' AND "Population" > '290,458'