Finding the Third Proportional to 18,191.25 and 39,966.75

Step by Step Solution

1. Step 1: Write the proportion equation
   18,191.25 : 39,966.75 = 39,966.75 : x
2. Step 2: Convert to fraction form
   18,191.25/39,966.75 = 39,966.75/x
3. Step 3: Cross multiply
   18,191.25x = 39,966.75 × 39,966.75
4. Step 4: Simplify right side
   18,191.25x = 1,597,341,105.56
5. Step 5: Solve for x
   x = 1,597,341,105.56/18,191.25
6. Step 6: Final answer
   x = 87,808.21