Finding the Third Proportional to 572.91 and 1,222.59

Step by Step Solution

1. Step 1: Write the proportion equation
   572.91 : 1,222.59 = 1,222.59 : x
2. Step 2: Convert to fraction form
   572.91/1,222.59 = 1,222.59/x
3. Step 3: Cross multiply
   572.91x = 1,222.59 × 1,222.59
4. Step 4: Simplify right side
   572.91x = 1,494,735.48
5. Step 5: Solve for x
   x = 1,494,735.48/572.91
6. Step 6: Final answer
   x = 2,609.04