Finding the Third Proportional to 190.69 and 287.93

Step by Step Solution

1. Step 1: Write the proportion equation
   190.69 : 287.93 = 287.93 : x
2. Step 2: Convert to fraction form
   190.69/287.93 = 287.93/x
3. Step 3: Cross multiply
   190.69x = 287.93 × 287.93
4. Step 4: Simplify right side
   190.69x = 82,903.50
5. Step 5: Solve for x
   x = 82,903.50/190.69
6. Step 6: Final answer
   x = 434.76