Finding the Third Proportional to 485,531 and 735,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   485,531 : 735,045.50 = 735,045.50 : x
2. Step 2: Convert to fraction form
   485,531/735,045.50 = 735,045.50/x
3. Step 3: Cross multiply
   485,531x = 735,045.50 × 735,045.50
4. Step 4: Simplify right side
   485,531x = 540,291,887,070.25
5. Step 5: Solve for x
   x = 540,291,887,070.25/485,531
6. Step 6: Final answer
   x = 1,112,785.56