Finding the Third Proportional to 79.75 and 101.38

Step by Step Solution

1. Step 1: Write the proportion equation
   79.75 : 101.38 = 101.38 : x
2. Step 2: Convert to fraction form
   79.75/101.38 = 101.38/x
3. Step 3: Cross multiply
   79.75x = 101.38 × 101.38
4. Step 4: Simplify right side
   79.75x = 10,276.89
5. Step 5: Solve for x
   x = 10,276.89/79.75
6. Step 6: Final answer
   x = 128.86