Finding the Third Proportional to 304.50 and 718.69

Step by Step Solution

1. Step 1: Write the proportion equation
   304.50 : 718.69 = 718.69 : x
2. Step 2: Convert to fraction form
   304.50/718.69 = 718.69/x
3. Step 3: Cross multiply
   304.50x = 718.69 × 718.69
4. Step 4: Simplify right side
   304.50x = 516,511.72
5. Step 5: Solve for x
   x = 516,511.72/304.50
6. Step 6: Final answer
   x = 1,696.26