Finding the Third Proportional to 39,820.50 and 85,543.31

Step by Step Solution

1. Step 1: Write the proportion equation
   39,820.50 : 85,543.31 = 85,543.31 : x
2. Step 2: Convert to fraction form
   39,820.50/85,543.31 = 85,543.31/x
3. Step 3: Cross multiply
   39,820.50x = 85,543.31 × 85,543.31
4. Step 4: Simplify right side
   39,820.50x = 7,317,658,313.47
5. Step 5: Solve for x
   x = 7,317,658,313.47/39,820.50
6. Step 6: Final answer
   x = 183,766.11