Finding the Third Proportional to 2,431.90 and 2,605.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.90 : 2,605.61 = 2,605.61 : x
2. Step 2: Convert to fraction form
   2,431.90/2,605.61 = 2,605.61/x
3. Step 3: Cross multiply
   2,431.90x = 2,605.61 × 2,605.61
4. Step 4: Simplify right side
   2,431.90x = 6,789,179.86
5. Step 5: Solve for x
   x = 6,789,179.86/2,431.90
6. Step 6: Final answer
   x = 2,791.72