Finding the Third Proportional to 67.50 and 79.31

Step by Step Solution

1. Step 1: Write the proportion equation
   67.50 : 79.31 = 79.31 : x
2. Step 2: Convert to fraction form
   67.50/79.31 = 79.31/x
3. Step 3: Cross multiply
   67.50x = 79.31 × 79.31
4. Step 4: Simplify right side
   67.50x = 6,290.47
5. Step 5: Solve for x
   x = 6,290.47/67.50
6. Step 6: Final answer
   x = 93.19