Finding the Third Proportional to 30,261,046.50 and 64,930,470

Step by Step Solution

1. Step 1: Write the proportion equation
   30,261,046.50 : 64,930,470 = 64,930,470 : x
2. Step 2: Convert to fraction form
   30,261,046.50/64,930,470 = 64,930,470/x
3. Step 3: Cross multiply
   30,261,046.50x = 64,930,470 × 64,930,470
4. Step 4: Simplify right side
   30,261,046.50x = 4,215,965,934,420,900
5. Step 5: Solve for x
   x = 4,215,965,934,420,900/30,261,046.50
6. Step 6: Final answer
   x = 139,319,898.75