Finding the Third Proportional to 67.50 and 87.38

Step by Step Solution

1. Step 1: Write the proportion equation
   67.50 : 87.38 = 87.38 : x
2. Step 2: Convert to fraction form
   67.50/87.38 = 87.38/x
3. Step 3: Cross multiply
   67.50x = 87.38 × 87.38
4. Step 4: Simplify right side
   67.50x = 7,634.39
5. Step 5: Solve for x
   x = 7,634.39/67.50
6. Step 6: Final answer
   x = 113.10