Finding the Third Proportional to 8,681,568 and 12,771,456

Step by Step Solution

1. Step 1: Write the proportion equation
   8,681,568 : 12,771,456 = 12,771,456 : x
2. Step 2: Convert to fraction form
   8,681,568/12,771,456 = 12,771,456/x
3. Step 3: Cross multiply
   8,681,568x = 12,771,456 × 12,771,456
4. Step 4: Simplify right side
   8,681,568x = 163,110,088,359,936
5. Step 5: Solve for x
   x = 163,110,088,359,936/8,681,568
6. Step 6: Final answer
   x = 18,788,090.86