Finding the Third Proportional to 120,123,658.50 and 262,266,028.50

Step by Step Solution

1. Step 1: Write the proportion equation
   120,123,658.50 : 262,266,028.50 = 262,266,028.50 : x
2. Step 2: Convert to fraction form
   120,123,658.50/262,266,028.50 = 262,266,028.50/x
3. Step 3: Cross multiply
   120,123,658.50x = 262,266,028.50 × 262,266,028.50
4. Step 4: Simplify right side
   120,123,658.50x = 68,783,469,705,162,816
5. Step 5: Solve for x
   x = 68,783,469,705,162,816/120,123,658.50
6. Step 6: Final answer
   x = 572,605,518.05