Finding the Third Proportional to 712.73 and 1,531.59

Step by Step Solution

1. Step 1: Write the proportion equation
   712.73 : 1,531.59 = 1,531.59 : x
2. Step 2: Convert to fraction form
   712.73/1,531.59 = 1,531.59/x
3. Step 3: Cross multiply
   712.73x = 1,531.59 × 1,531.59
4. Step 4: Simplify right side
   712.73x = 2,345,779.42
5. Step 5: Solve for x
   x = 2,345,779.42/712.73
6. Step 6: Final answer
   x = 3,291.24