Finding the Third Proportional to 516.38 and 1,131.47

Step by Step Solution

1. Step 1: Write the proportion equation
   516.38 : 1,131.47 = 1,131.47 : x
2. Step 2: Convert to fraction form
   516.38/1,131.47 = 1,131.47/x
3. Step 3: Cross multiply
   516.38x = 1,131.47 × 1,131.47
4. Step 4: Simplify right side
   516.38x = 1,280,221.53
5. Step 5: Solve for x
   x = 1,280,221.53/516.38
6. Step 6: Final answer
   x = 2,479.25