Finding the Third Proportional to 87,661.50 and 189,162.38

Step by Step Solution

1. Step 1: Write the proportion equation
   87,661.50 : 189,162.38 = 189,162.38 : x
2. Step 2: Convert to fraction form
   87,661.50/189,162.38 = 189,162.38/x
3. Step 3: Cross multiply
   87,661.50x = 189,162.38 × 189,162.38
4. Step 4: Simplify right side
   87,661.50x = 35,782,404,115.64
5. Step 5: Solve for x
   x = 35,782,404,115.64/87,661.50
6. Step 6: Final answer
   x = 408,188.36