Finding the Third Proportional to 8,617,590 and 13,105,449

Step by Step Solution

1. Step 1: Write the proportion equation
   8,617,590 : 13,105,449 = 13,105,449 : x
2. Step 2: Convert to fraction form
   8,617,590/13,105,449 = 13,105,449/x
3. Step 3: Cross multiply
   8,617,590x = 13,105,449 × 13,105,449
4. Step 4: Simplify right side
   8,617,590x = 171,752,793,491,601
5. Step 5: Solve for x
   x = 171,752,793,491,601/8,617,590
6. Step 6: Final answer
   x = 19,930,490.25