Finding the Third Proportional to 18,231.75 and 39,380.06

Step by Step Solution

1. Step 1: Write the proportion equation
   18,231.75 : 39,380.06 = 39,380.06 : x
2. Step 2: Convert to fraction form
   18,231.75/39,380.06 = 39,380.06/x
3. Step 3: Cross multiply
   18,231.75x = 39,380.06 × 39,380.06
4. Step 4: Simplify right side
   18,231.75x = 1,550,789,322.50
5. Step 5: Solve for x
   x = 1,550,789,322.50/18,231.75
6. Step 6: Final answer
   x = 85,059.82