Finding the Third Proportional to 56.32 and 122.88

Step by Step Solution

1. Step 1: Write the proportion equation
   56.32 : 122.88 = 122.88 : x
2. Step 2: Convert to fraction form
   56.32/122.88 = 122.88/x
3. Step 3: Cross multiply
   56.32x = 122.88 × 122.88
4. Step 4: Simplify right side
   56.32x = 15,100.55
5. Step 5: Solve for x
   x = 15,100.55/56.32
6. Step 6: Final answer
   x = 268.12