Finding the Third Proportional to 522.78 and 1,131.71

Step by Step Solution

1. Step 1: Write the proportion equation
   522.78 : 1,131.71 = 1,131.71 : x
2. Step 2: Convert to fraction form
   522.78/1,131.71 = 1,131.71/x
3. Step 3: Cross multiply
   522.78x = 1,131.71 × 1,131.71
4. Step 4: Simplify right side
   522.78x = 1,280,758.59
5. Step 5: Solve for x
   x = 1,280,758.59/522.78
6. Step 6: Final answer
   x = 2,449.89