Finding the Third Proportional to 122,803.50 and 173,728.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,803.50 : 173,728.50 = 173,728.50 : x
2. Step 2: Convert to fraction form
   122,803.50/173,728.50 = 173,728.50/x
3. Step 3: Cross multiply
   122,803.50x = 173,728.50 × 173,728.50
4. Step 4: Simplify right side
   122,803.50x = 30,181,591,712.25
5. Step 5: Solve for x
   x = 30,181,591,712.25/122,803.50
6. Step 6: Final answer
   x = 245,771.43