Finding the Third Proportional to 45.28 and 72.56

Step by Step Solution

1. Step 1: Write the proportion equation
   45.28 : 72.56 = 72.56 : x
2. Step 2: Convert to fraction form
   45.28/72.56 = 72.56/x
3. Step 3: Cross multiply
   45.28x = 72.56 × 72.56
4. Step 4: Simplify right side
   45.28x = 5,265.32
5. Step 5: Solve for x
   x = 5,265.32/45.28
6. Step 6: Final answer
   x = 116.28