Finding the Third Proportional to 304.80 and 435.59

Step by Step Solution

1. Step 1: Write the proportion equation
   304.80 : 435.59 = 435.59 : x
2. Step 2: Convert to fraction form
   304.80/435.59 = 435.59/x
3. Step 3: Cross multiply
   304.80x = 435.59 × 435.59
4. Step 4: Simplify right side
   304.80x = 189,735.11
5. Step 5: Solve for x
   x = 189,735.11/304.80
6. Step 6: Final answer
   x = 622.48