Finding the Third Proportional to 132,516 and 287,472

Step by Step Solution

1. Step 1: Write the proportion equation
   132,516 : 287,472 = 287,472 : x
2. Step 2: Convert to fraction form
   132,516/287,472 = 287,472/x
3. Step 3: Cross multiply
   132,516x = 287,472 × 287,472
4. Step 4: Simplify right side
   132,516x = 82,640,150,784
5. Step 5: Solve for x
   x = 82,640,150,784/132,516
6. Step 6: Final answer
   x = 623,623.95