Finding the Third Proportional to 208,939.50 and 451,128

Step by Step Solution

1. Step 1: Write the proportion equation
   208,939.50 : 451,128 = 451,128 : x
2. Step 2: Convert to fraction form
   208,939.50/451,128 = 451,128/x
3. Step 3: Cross multiply
   208,939.50x = 451,128 × 451,128
4. Step 4: Simplify right side
   208,939.50x = 203,516,472,384
5. Step 5: Solve for x
   x = 203,516,472,384/208,939.50
6. Step 6: Final answer
   x = 974,044.99