Finding the Third Proportional to 185,580 and 404,280

Step by Step Solution

1. Step 1: Write the proportion equation
   185,580 : 404,280 = 404,280 : x
2. Step 2: Convert to fraction form
   185,580/404,280 = 404,280/x
3. Step 3: Cross multiply
   185,580x = 404,280 × 404,280
4. Step 4: Simplify right side
   185,580x = 163,442,318,400
5. Step 5: Solve for x
   x = 163,442,318,400/185,580
6. Step 6: Final answer
   x = 880,710.84