Finding the Third Proportional to 517,329 and 798,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   517,329 : 798,142.50 = 798,142.50 : x
2. Step 2: Convert to fraction form
   517,329/798,142.50 = 798,142.50/x
3. Step 3: Cross multiply
   517,329x = 798,142.50 × 798,142.50
4. Step 4: Simplify right side
   517,329x = 637,031,450,306.25
5. Step 5: Solve for x
   x = 637,031,450,306.25/517,329
6. Step 6: Final answer
   x = 1,231,385.54