Finding the Third Proportional to 17.72 and 36.56

Step by Step Solution

1. Step 1: Write the proportion equation
   17.72 : 36.56 = 36.56 : x
2. Step 2: Convert to fraction form
   17.72/36.56 = 36.56/x
3. Step 3: Cross multiply
   17.72x = 36.56 × 36.56
4. Step 4: Simplify right side
   17.72x = 1,336.82
5. Step 5: Solve for x
   x = 1,336.82/17.72
6. Step 6: Final answer
   x = 75.45