Finding the Third Proportional to 39,433.50 and 80,709.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,433.50 : 80,709.75 = 80,709.75 : x
2. Step 2: Convert to fraction form
   39,433.50/80,709.75 = 80,709.75/x
3. Step 3: Cross multiply
   39,433.50x = 80,709.75 × 80,709.75
4. Step 4: Simplify right side
   39,433.50x = 6,514,063,745.06
5. Step 5: Solve for x
   x = 6,514,063,745.06/39,433.50
6. Step 6: Final answer
   x = 165,191.11