Finding the Third Proportional to 743.91 and 1,062.56

Step by Step Solution

1. Step 1: Write the proportion equation
   743.91 : 1,062.56 = 1,062.56 : x
2. Step 2: Convert to fraction form
   743.91/1,062.56 = 1,062.56/x
3. Step 3: Cross multiply
   743.91x = 1,062.56 × 1,062.56
4. Step 4: Simplify right side
   743.91x = 1,129,039.07
5. Step 5: Solve for x
   x = 1,129,039.07/743.91
6. Step 6: Final answer
   x = 1,517.72