Finding the Third Proportional to 57.09 and 123.32

Step by Step Solution

1. Step 1: Write the proportion equation
   57.09 : 123.32 = 123.32 : x
2. Step 2: Convert to fraction form
   57.09/123.32 = 123.32/x
3. Step 3: Cross multiply
   57.09x = 123.32 × 123.32
4. Step 4: Simplify right side
   57.09x = 15,206.94
5. Step 5: Solve for x
   x = 15,206.94/57.09
6. Step 6: Final answer
   x = 266.35