Finding the Third Proportional to 81,607.50 and 173,299.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,607.50 : 173,299.50 = 173,299.50 : x
2. Step 2: Convert to fraction form
   81,607.50/173,299.50 = 173,299.50/x
3. Step 3: Cross multiply
   81,607.50x = 173,299.50 × 173,299.50
4. Step 4: Simplify right side
   81,607.50x = 30,032,716,700.25
5. Step 5: Solve for x
   x = 30,032,716,700.25/81,607.50
6. Step 6: Final answer
   x = 368,014.17