Finding the Third Proportional to 69.28 and 100.88

Step by Step Solution

1. Step 1: Write the proportion equation
   69.28 : 100.88 = 100.88 : x
2. Step 2: Convert to fraction form
   69.28/100.88 = 100.88/x
3. Step 3: Cross multiply
   69.28x = 100.88 × 100.88
4. Step 4: Simplify right side
   69.28x = 10,175.77
5. Step 5: Solve for x
   x = 10,175.77/69.28
6. Step 6: Final answer
   x = 146.88