Finding the Third Proportional to 4,545,234 and 9,720,864

Step by Step Solution

1. Step 1: Write the proportion equation
   4,545,234 : 9,720,864 = 9,720,864 : x
2. Step 2: Convert to fraction form
   4,545,234/9,720,864 = 9,720,864/x
3. Step 3: Cross multiply
   4,545,234x = 9,720,864 × 9,720,864
4. Step 4: Simplify right side
   4,545,234x = 94,495,196,906,496
5. Step 5: Solve for x
   x = 94,495,196,906,496/4,545,234
6. Step 6: Final answer
   x = 20,789,952.05