Finding the Third Proportional to 88.69 and 188.19

Step by Step Solution

1. Step 1: Write the proportion equation
   88.69 : 188.19 = 188.19 : x
2. Step 2: Convert to fraction form
   88.69/188.19 = 188.19/x
3. Step 3: Cross multiply
   88.69x = 188.19 × 188.19
4. Step 4: Simplify right side
   88.69x = 35,414.54
5. Step 5: Solve for x
   x = 35,414.54/88.69
6. Step 6: Final answer
   x = 399.32