Finding the Third Proportional to 708.38 and 1,300.31

Step by Step Solution

1. Step 1: Write the proportion equation
   708.38 : 1,300.31 = 1,300.31 : x
2. Step 2: Convert to fraction form
   708.38/1,300.31 = 1,300.31/x
3. Step 3: Cross multiply
   708.38x = 1,300.31 × 1,300.31
4. Step 4: Simplify right side
   708.38x = 1,690,812.60
5. Step 5: Solve for x
   x = 1,690,812.60/708.38
6. Step 6: Final answer
   x = 2,386.89