Finding the Third Proportional to 301.69 and 619.31

Step by Step Solution

1. Step 1: Write the proportion equation
   301.69 : 619.31 = 619.31 : x
2. Step 2: Convert to fraction form
   301.69/619.31 = 619.31/x
3. Step 3: Cross multiply
   301.69x = 619.31 × 619.31
4. Step 4: Simplify right side
   301.69x = 383,547.97
5. Step 5: Solve for x
   x = 383,547.97/301.69
6. Step 6: Final answer
   x = 1,271.34