Finding the Third Proportional to 28.50 and 56.38

Step by Step Solution

1. Step 1: Write the proportion equation
   28.50 : 56.38 = 56.38 : x
2. Step 2: Convert to fraction form
   28.50/56.38 = 56.38/x
3. Step 3: Cross multiply
   28.50x = 56.38 × 56.38
4. Step 4: Simplify right side
   28.50x = 3,178.14
5. Step 5: Solve for x
   x = 3,178.14/28.50
6. Step 6: Final answer
   x = 111.51