Finding the Third Proportional to 123.50 and 268.25

Step by Step Solution

1. Step 1: Write the proportion equation
   123.50 : 268.25 = 268.25 : x
2. Step 2: Convert to fraction form
   123.50/268.25 = 268.25/x
3. Step 3: Cross multiply
   123.50x = 268.25 × 268.25
4. Step 4: Simplify right side
   123.50x = 71,958.06
5. Step 5: Solve for x
   x = 71,958.06/123.50
6. Step 6: Final answer
   x = 582.66