Finding the Third Proportional to 79.69 and 112.31

Step by Step Solution

1. Step 1: Write the proportion equation
   79.69 : 112.31 = 112.31 : x
2. Step 2: Convert to fraction form
   79.69/112.31 = 112.31/x
3. Step 3: Cross multiply
   79.69x = 112.31 × 112.31
4. Step 4: Simplify right side
   79.69x = 12,614.10
5. Step 5: Solve for x
   x = 12,614.10/79.69
6. Step 6: Final answer
   x = 158.29