Finding the Third Proportional to 4,518,418 and 9,771,028

Step by Step Solution

1. Step 1: Write the proportion equation
   4,518,418 : 9,771,028 = 9,771,028 : x
2. Step 2: Convert to fraction form
   4,518,418/9,771,028 = 9,771,028/x
3. Step 3: Cross multiply
   4,518,418x = 9,771,028 × 9,771,028
4. Step 4: Simplify right side
   4,518,418x = 95,472,988,176,784
5. Step 5: Solve for x
   x = 95,472,988,176,784/4,518,418
6. Step 6: Final answer
   x = 21,129,737.93