Finding the Third Proportional to 40,216.50 and 87,345

Step by Step Solution

1. Step 1: Write the proportion equation
   40,216.50 : 87,345 = 87,345 : x
2. Step 2: Convert to fraction form
   40,216.50/87,345 = 87,345/x
3. Step 3: Cross multiply
   40,216.50x = 87,345 × 87,345
4. Step 4: Simplify right side
   40,216.50x = 7,629,149,025
5. Step 5: Solve for x
   x = 7,629,149,025/40,216.50
6. Step 6: Final answer
   x = 189,701.96