Finding the Third Proportional to 122,831 and 260,424.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,831 : 260,424.50 = 260,424.50 : x
2. Step 2: Convert to fraction form
   122,831/260,424.50 = 260,424.50/x
3. Step 3: Cross multiply
   122,831x = 260,424.50 × 260,424.50
4. Step 4: Simplify right side
   122,831x = 67,820,920,200.25
5. Step 5: Solve for x
   x = 67,820,920,200.25/122,831
6. Step 6: Final answer
   x = 552,148.24