Finding the Third Proportional to 132.50 and 211.56

Step by Step Solution

1. Step 1: Write the proportion equation
   132.50 : 211.56 = 211.56 : x
2. Step 2: Convert to fraction form
   132.50/211.56 = 211.56/x
3. Step 3: Cross multiply
   132.50x = 211.56 × 211.56
4. Step 4: Simplify right side
   132.50x = 44,758.69
5. Step 5: Solve for x
   x = 44,758.69/132.50
6. Step 6: Final answer
   x = 337.80