Finding the Third Proportional to 72.88 and 115.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72.88 : 115.56 = 115.56 : x
2. Step 2: Convert to fraction form
   72.88/115.56 = 115.56/x
3. Step 3: Cross multiply
   72.88x = 115.56 × 115.56
4. Step 4: Simplify right side
   72.88x = 13,354.69
5. Step 5: Solve for x
   x = 13,354.69/72.88
6. Step 6: Final answer
   x = 183.25