Finding the Third Proportional to 81,605.50 and 173,007.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,605.50 : 173,007.50 = 173,007.50 : x
2. Step 2: Convert to fraction form
   81,605.50/173,007.50 = 173,007.50/x
3. Step 3: Cross multiply
   81,605.50x = 173,007.50 × 173,007.50
4. Step 4: Simplify right side
   81,605.50x = 29,931,595,056.25
5. Step 5: Solve for x
   x = 29,931,595,056.25/81,605.50
6. Step 6: Final answer
   x = 366,784.04