Finding the Third Proportional to 8,391,567 and 12,958,048

Step by Step Solution

1. Step 1: Write the proportion equation
   8,391,567 : 12,958,048 = 12,958,048 : x
2. Step 2: Convert to fraction form
   8,391,567/12,958,048 = 12,958,048/x
3. Step 3: Cross multiply
   8,391,567x = 12,958,048 × 12,958,048
4. Step 4: Simplify right side
   8,391,567x = 167,911,007,970,304
5. Step 5: Solve for x
   x = 167,911,007,970,304/8,391,567
6. Step 6: Final answer
   x = 20,009,493.81