Finding the Third Proportional to 190.69 and 275.06

Step by Step Solution

1. Step 1: Write the proportion equation
   190.69 : 275.06 = 275.06 : x
2. Step 2: Convert to fraction form
   190.69/275.06 = 275.06/x
3. Step 3: Cross multiply
   190.69x = 275.06 × 275.06
4. Step 4: Simplify right side
   190.69x = 75,659.38
5. Step 5: Solve for x
   x = 75,659.38/190.69
6. Step 6: Final answer
   x = 396.77