Finding the Third Proportional to 8,885,736 and 12,991,800

Step by Step Solution

1. Step 1: Write the proportion equation
   8,885,736 : 12,991,800 = 12,991,800 : x
2. Step 2: Convert to fraction form
   8,885,736/12,991,800 = 12,991,800/x
3. Step 3: Cross multiply
   8,885,736x = 12,991,800 × 12,991,800
4. Step 4: Simplify right side
   8,885,736x = 168,786,867,240,000
5. Step 5: Solve for x
   x = 168,786,867,240,000/8,885,736
6. Step 6: Final answer
   x = 18,995,260.18