Finding the Third Proportional to 1,321.31 and 2,710.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.31 : 2,710.13 = 2,710.13 : x
2. Step 2: Convert to fraction form
   1,321.31/2,710.13 = 2,710.13/x
3. Step 3: Cross multiply
   1,321.31x = 2,710.13 × 2,710.13
4. Step 4: Simplify right side
   1,321.31x = 7,344,777.52
5. Step 5: Solve for x
   x = 7,344,777.52/1,321.31
6. Step 6: Final answer
   x = 5,558.70