Finding the Third Proportional to 269.69 and 479.56

Step by Step Solution

1. Step 1: Write the proportion equation
   269.69 : 479.56 = 479.56 : x
2. Step 2: Convert to fraction form
   269.69/479.56 = 479.56/x
3. Step 3: Cross multiply
   269.69x = 479.56 × 479.56
4. Step 4: Simplify right side
   269.69x = 229,980.19
5. Step 5: Solve for x
   x = 229,980.19/269.69
6. Step 6: Final answer
   x = 852.77