Finding the Third Proportional to 123,939 and 175,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,939 : 175,216.50 = 175,216.50 : x
2. Step 2: Convert to fraction form
   123,939/175,216.50 = 175,216.50/x
3. Step 3: Cross multiply
   123,939x = 175,216.50 × 175,216.50
4. Step 4: Simplify right side
   123,939x = 30,700,821,872.25
5. Step 5: Solve for x
   x = 30,700,821,872.25/123,939
6. Step 6: Final answer
   x = 247,709.13