Finding the Third Proportional to 39,247.88 and 81,816.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,247.88 : 81,816.75 = 81,816.75 : x
2. Step 2: Convert to fraction form
   39,247.88/81,816.75 = 81,816.75/x
3. Step 3: Cross multiply
   39,247.88x = 81,816.75 × 81,816.75
4. Step 4: Simplify right side
   39,247.88x = 6,693,980,580.56
5. Step 5: Solve for x
   x = 6,693,980,580.56/39,247.88
6. Step 6: Final answer
   x = 170,556.51