Finding the Third Proportional to 8,391,569 and 12,958,051

Step by Step Solution

1. Step 1: Write the proportion equation
   8,391,569 : 12,958,051 = 12,958,051 : x
2. Step 2: Convert to fraction form
   8,391,569/12,958,051 = 12,958,051/x
3. Step 3: Cross multiply
   8,391,569x = 12,958,051 × 12,958,051
4. Step 4: Simplify right side
   8,391,569x = 167,911,085,718,601
5. Step 5: Solve for x
   x = 167,911,085,718,601/8,391,569
6. Step 6: Final answer
   x = 20,009,498.31