Finding the Third Proportional to 40,261.50 and 87,438.38

Step by Step Solution

1. Step 1: Write the proportion equation
   40,261.50 : 87,438.38 = 87,438.38 : x
2. Step 2: Convert to fraction form
   40,261.50/87,438.38 = 87,438.38/x
3. Step 3: Cross multiply
   40,261.50x = 87,438.38 × 87,438.38
4. Step 4: Simplify right side
   40,261.50x = 7,645,469,422.64
5. Step 5: Solve for x
   x = 7,645,469,422.64/40,261.50
6. Step 6: Final answer
   x = 189,895.30