Finding the Third Proportional to 757.69 and 1,591.31

Step by Step Solution

1. Step 1: Write the proportion equation
   757.69 : 1,591.31 = 1,591.31 : x
2. Step 2: Convert to fraction form
   757.69/1,591.31 = 1,591.31/x
3. Step 3: Cross multiply
   757.69x = 1,591.31 × 1,591.31
4. Step 4: Simplify right side
   757.69x = 2,532,275.47
5. Step 5: Solve for x
   x = 2,532,275.47/757.69
6. Step 6: Final answer
   x = 3,342.11