CREATE TABLE table_73393 ("District" TEXT, "Vacator" TEXT, "Reason for change" TEXT, "Successor" TEXT, "Date successor seated" TEXT)

Name the date successor seated is south carolina 3rd
SELECT "Date successor seated" FROM table_73393 WHERE "District" = 'South Carolina 3rd'
SELECT "Date successor seated" FROM "table_73393" WHERE "District" = 'South Carolina 3rd'