Finding the Third Proportional to 55.50 and 131.44

Step by Step Solution

1. Step 1: Write the proportion equation
   55.50 : 131.44 = 131.44 : x
2. Step 2: Convert to fraction form
   55.50/131.44 = 131.44/x
3. Step 3: Cross multiply
   55.50x = 131.44 × 131.44
4. Step 4: Simplify right side
   55.50x = 17,275.82
5. Step 5: Solve for x
   x = 17,275.82/55.50
6. Step 6: Final answer
   x = 311.28