Finding the Third Proportional to 8,496,694 and 12,988,862

Step by Step Solution

1. Step 1: Write the proportion equation
   8,496,694 : 12,988,862 = 12,988,862 : x
2. Step 2: Convert to fraction form
   8,496,694/12,988,862 = 12,988,862/x
3. Step 3: Cross multiply
   8,496,694x = 12,988,862 × 12,988,862
4. Step 4: Simplify right side
   8,496,694x = 168,710,536,055,044
5. Step 5: Solve for x
   x = 168,710,536,055,044/8,496,694
6. Step 6: Final answer
   x = 19,856,021.18