Finding the Third Proportional to 8,513,902 and 12,758,398

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513,902 : 12,758,398 = 12,758,398 : x
2. Step 2: Convert to fraction form
   8,513,902/12,758,398 = 12,758,398/x
3. Step 3: Cross multiply
   8,513,902x = 12,758,398 × 12,758,398
4. Step 4: Simplify right side
   8,513,902x = 162,776,719,526,404
5. Step 5: Solve for x
   x = 162,776,719,526,404/8,513,902
6. Step 6: Final answer
   x = 19,118,932.72