Finding the Third Proportional to 18,622.50 and 39,159.75

Step by Step Solution

1. Step 1: Write the proportion equation
   18,622.50 : 39,159.75 = 39,159.75 : x
2. Step 2: Convert to fraction form
   18,622.50/39,159.75 = 39,159.75/x
3. Step 3: Cross multiply
   18,622.50x = 39,159.75 × 39,159.75
4. Step 4: Simplify right side
   18,622.50x = 1,533,486,020.06
5. Step 5: Solve for x
   x = 1,533,486,020.06/18,622.50
6. Step 6: Final answer
   x = 82,345.87