Finding the Third Proportional to 4,206,539 and 9,150,105

Step by Step Solution

1. Step 1: Write the proportion equation
   4,206,539 : 9,150,105 = 9,150,105 : x
2. Step 2: Convert to fraction form
   4,206,539/9,150,105 = 9,150,105/x
3. Step 3: Cross multiply
   4,206,539x = 9,150,105 × 9,150,105
4. Step 4: Simplify right side
   4,206,539x = 83,724,421,511,025
5. Step 5: Solve for x
   x = 83,724,421,511,025/4,206,539
6. Step 6: Final answer
   x = 19,903,398.38