Finding the Third Proportional to 4,206,064 and 9,150,240

Step by Step Solution

1. Step 1: Write the proportion equation
   4,206,064 : 9,150,240 = 9,150,240 : x
2. Step 2: Convert to fraction form
   4,206,064/9,150,240 = 9,150,240/x
3. Step 3: Cross multiply
   4,206,064x = 9,150,240 × 9,150,240
4. Step 4: Simplify right side
   4,206,064x = 83,726,892,057,600
5. Step 5: Solve for x
   x = 83,726,892,057,600/4,206,064
6. Step 6: Final answer
   x = 19,906,233.49