Finding the Third Proportional to 2,558.31 and 3,821.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.31 : 3,821.69 = 3,821.69 : x
2. Step 2: Convert to fraction form
   2,558.31/3,821.69 = 3,821.69/x
3. Step 3: Cross multiply
   2,558.31x = 3,821.69 × 3,821.69
4. Step 4: Simplify right side
   2,558.31x = 14,605,295.35
5. Step 5: Solve for x
   x = 14,605,295.35/2,558.31
6. Step 6: Final answer
   x = 5,708.96