Finding the Third Proportional to 147,696,862.50 and 321,401,529

Step by Step Solution

1. Step 1: Write the proportion equation
   147,696,862.50 : 321,401,529 = 321,401,529 : x
2. Step 2: Convert to fraction form
   147,696,862.50/321,401,529 = 321,401,529/x
3. Step 3: Cross multiply
   147,696,862.50x = 321,401,529 × 321,401,529
4. Step 4: Simplify right side
   147,696,862.50x = 103,298,942,843,537,840
5. Step 5: Solve for x
   x = 103,298,942,843,537,840/147,696,862.50
6. Step 6: Final answer
   x = 699,398,356.17