Finding the Third Proportional to 8,391,568 and 12,958,049

Step by Step Solution

1. Step 1: Write the proportion equation
   8,391,568 : 12,958,049 = 12,958,049 : x
2. Step 2: Convert to fraction form
   8,391,568/12,958,049 = 12,958,049/x
3. Step 3: Cross multiply
   8,391,568x = 12,958,049 × 12,958,049
4. Step 4: Simplify right side
   8,391,568x = 167,911,033,886,401
5. Step 5: Solve for x
   x = 167,911,033,886,401/8,391,568
6. Step 6: Final answer
   x = 20,009,494.52