Finding the Third Proportional to 68.88 and 100.88

Step by Step Solution

1. Step 1: Write the proportion equation
   68.88 : 100.88 = 100.88 : x
2. Step 2: Convert to fraction form
   68.88/100.88 = 100.88/x
3. Step 3: Cross multiply
   68.88x = 100.88 × 100.88
4. Step 4: Simplify right side
   68.88x = 10,175.77
5. Step 5: Solve for x
   x = 10,175.77/68.88
6. Step 6: Final answer
   x = 147.74