Finding the Third Proportional to 124,356 and 266,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,356 : 266,440.50 = 266,440.50 : x
2. Step 2: Convert to fraction form
   124,356/266,440.50 = 266,440.50/x
3. Step 3: Cross multiply
   124,356x = 266,440.50 × 266,440.50
4. Step 4: Simplify right side
   124,356x = 70,990,540,040.25
5. Step 5: Solve for x
   x = 70,990,540,040.25/124,356
6. Step 6: Final answer
   x = 570,865.42