Finding the Third Proportional to 12,391,120 and 17,418,617

Step by Step Solution

1. Step 1: Write the proportion equation
   12,391,120 : 17,418,617 = 17,418,617 : x
2. Step 2: Convert to fraction form
   12,391,120/17,418,617 = 17,418,617/x
3. Step 3: Cross multiply
   12,391,120x = 17,418,617 × 17,418,617
4. Step 4: Simplify right side
   12,391,120x = 303,408,218,192,689
5. Step 5: Solve for x
   x = 303,408,218,192,689/12,391,120
6. Step 6: Final answer
   x = 24,485,939.79