Finding the Third Proportional to 1,391.55 and 2,610.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391.55 : 2,610.35 = 2,610.35 : x
2. Step 2: Convert to fraction form
   1,391.55/2,610.35 = 2,610.35/x
3. Step 3: Cross multiply
   1,391.55x = 2,610.35 × 2,610.35
4. Step 4: Simplify right side
   1,391.55x = 6,813,935.28
5. Step 5: Solve for x
   x = 6,813,935.28/1,391.55
6. Step 6: Final answer
   x = 4,896.63