Finding the Third Proportional to 124,881.75 and 260,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,881.75 : 260,131.50 = 260,131.50 : x
2. Step 2: Convert to fraction form
   124,881.75/260,131.50 = 260,131.50/x
3. Step 3: Cross multiply
   124,881.75x = 260,131.50 × 260,131.50
4. Step 4: Simplify right side
   124,881.75x = 67,668,397,292.25
5. Step 5: Solve for x
   x = 67,668,397,292.25/124,881.75
6. Step 6: Final answer
   x = 541,859.78