Finding the Third Proportional to 8,815,842 and 13,356,828

Step by Step Solution

1. Step 1: Write the proportion equation
   8,815,842 : 13,356,828 = 13,356,828 : x
2. Step 2: Convert to fraction form
   8,815,842/13,356,828 = 13,356,828/x
3. Step 3: Cross multiply
   8,815,842x = 13,356,828 × 13,356,828
4. Step 4: Simplify right side
   8,815,842x = 178,404,854,221,584
5. Step 5: Solve for x
   x = 178,404,854,221,584/8,815,842
6. Step 6: Final answer
   x = 20,236,847.96