Finding the Third Proportional to 16.88 and 42.19

Step by Step Solution

1. Step 1: Write the proportion equation
   16.88 : 42.19 = 42.19 : x
2. Step 2: Convert to fraction form
   16.88/42.19 = 42.19/x
3. Step 3: Cross multiply
   16.88x = 42.19 × 42.19
4. Step 4: Simplify right side
   16.88x = 1,779.79
5. Step 5: Solve for x
   x = 1,779.79/16.88
6. Step 6: Final answer
   x = 105.47