Finding the Third Proportional to 40,108.50 and 86,403.38

Step by Step Solution

1. Step 1: Write the proportion equation
   40,108.50 : 86,403.38 = 86,403.38 : x
2. Step 2: Convert to fraction form
   40,108.50/86,403.38 = 86,403.38/x
3. Step 3: Cross multiply
   40,108.50x = 86,403.38 × 86,403.38
4. Step 4: Simplify right side
   40,108.50x = 7,465,543,211.39
5. Step 5: Solve for x
   x = 7,465,543,211.39/40,108.50
6. Step 6: Final answer
   x = 186,133.69