Finding the Third Proportional to 2,290.13 and 3,499.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.13 : 3,499.31 = 3,499.31 : x
2. Step 2: Convert to fraction form
   2,290.13/3,499.31 = 3,499.31/x
3. Step 3: Cross multiply
   2,290.13x = 3,499.31 × 3,499.31
4. Step 4: Simplify right side
   2,290.13x = 12,245,187.97
5. Step 5: Solve for x
   x = 12,245,187.97/2,290.13
6. Step 6: Final answer
   x = 5,346.95