Finding the Third Proportional to 56.25 and 82.88

Step by Step Solution

1. Step 1: Write the proportion equation
   56.25 : 82.88 = 82.88 : x
2. Step 2: Convert to fraction form
   56.25/82.88 = 82.88/x
3. Step 3: Cross multiply
   56.25x = 82.88 × 82.88
4. Step 4: Simplify right side
   56.25x = 6,868.27
5. Step 5: Solve for x
   x = 6,868.27/56.25
6. Step 6: Final answer
   x = 122.10