Finding the Third Proportional to 122,857.50 and 268,446

Step by Step Solution

1. Step 1: Write the proportion equation
   122,857.50 : 268,446 = 268,446 : x
2. Step 2: Convert to fraction form
   122,857.50/268,446 = 268,446/x
3. Step 3: Cross multiply
   122,857.50x = 268,446 × 268,446
4. Step 4: Simplify right side
   122,857.50x = 72,063,254,916
5. Step 5: Solve for x
   x = 72,063,254,916/122,857.50
6. Step 6: Final answer
   x = 586,559.67