Finding the Third Proportional to 179.30 and 287.30

Step by Step Solution

1. Step 1: Write the proportion equation
   179.30 : 287.30 = 287.30 : x
2. Step 2: Convert to fraction form
   179.30/287.30 = 287.30/x
3. Step 3: Cross multiply
   179.30x = 287.30 × 287.30
4. Step 4: Simplify right side
   179.30x = 82,539.49
5. Step 5: Solve for x
   x = 82,539.49/179.30
6. Step 6: Final answer
   x = 460.35