Finding the Third Proportional to 146,139,728 and 318,005,934.50

Step by Step Solution

1. Step 1: Write the proportion equation
   146,139,728 : 318,005,934.50 = 318,005,934.50 : x
2. Step 2: Convert to fraction form
   146,139,728/318,005,934.50 = 318,005,934.50/x
3. Step 3: Cross multiply
   146,139,728x = 318,005,934.50 × 318,005,934.50
4. Step 4: Simplify right side
   146,139,728x = 101,127,774,377,218,288
5. Step 5: Solve for x
   x = 101,127,774,377,218,288/146,139,728
6. Step 6: Final answer
   x = 691,993,722.45