Finding the Third Proportional to 8,452,728 and 12,840,732

Step by Step Solution

1. Step 1: Write the proportion equation
   8,452,728 : 12,840,732 = 12,840,732 : x
2. Step 2: Convert to fraction form
   8,452,728/12,840,732 = 12,840,732/x
3. Step 3: Cross multiply
   8,452,728x = 12,840,732 × 12,840,732
4. Step 4: Simplify right side
   8,452,728x = 164,884,398,295,824
5. Step 5: Solve for x
   x = 164,884,398,295,824/8,452,728
6. Step 6: Final answer
   x = 19,506,649.01