Finding the Third Proportional to 81,500.25 and 171,850.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,500.25 : 171,850.50 = 171,850.50 : x
2. Step 2: Convert to fraction form
   81,500.25/171,850.50 = 171,850.50/x
3. Step 3: Cross multiply
   81,500.25x = 171,850.50 × 171,850.50
4. Step 4: Simplify right side
   81,500.25x = 29,532,594,350.25
5. Step 5: Solve for x
   x = 29,532,594,350.25/81,500.25
6. Step 6: Final answer
   x = 362,362.01