Finding the Third Proportional to 485,434.69 and 728,151.94

Step by Step Solution

1. Step 1: Write the proportion equation
   485,434.69 : 728,151.94 = 728,151.94 : x
2. Step 2: Convert to fraction form
   485,434.69/728,151.94 = 728,151.94/x
3. Step 3: Cross multiply
   485,434.69x = 728,151.94 × 728,151.94
4. Step 4: Simplify right side
   485,434.69x = 530,205,244,085.00
5. Step 5: Solve for x
   x = 530,205,244,085.00/485,434.69
6. Step 6: Final answer
   x = 1,092,227.77