Finding the Third Proportional to 307.55 and 672.52

Step by Step Solution

1. Step 1: Write the proportion equation
   307.55 : 672.52 = 672.52 : x
2. Step 2: Convert to fraction form
   307.55/672.52 = 672.52/x
3. Step 3: Cross multiply
   307.55x = 672.52 × 672.52
4. Step 4: Simplify right side
   307.55x = 452,285.15
5. Step 5: Solve for x
   x = 452,285.15/307.55
6. Step 6: Final answer
   x = 1,470.62