Finding the Third Proportional to 326.50 and 474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   326.50 : 474.50 = 474.50 : x
2. Step 2: Convert to fraction form
   326.50/474.50 = 474.50/x
3. Step 3: Cross multiply
   326.50x = 474.50 × 474.50
4. Step 4: Simplify right side
   326.50x = 225,150.25
5. Step 5: Solve for x
   x = 225,150.25/326.50
6. Step 6: Final answer
   x = 689.59