Finding the Third Proportional to 8,513,926 and 12,758,418

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513,926 : 12,758,418 = 12,758,418 : x
2. Step 2: Convert to fraction form
   8,513,926/12,758,418 = 12,758,418/x
3. Step 3: Cross multiply
   8,513,926x = 12,758,418 × 12,758,418
4. Step 4: Simplify right side
   8,513,926x = 162,777,229,862,724
5. Step 5: Solve for x
   x = 162,777,229,862,724/8,513,926
6. Step 6: Final answer
   x = 19,118,938.77