Finding the Third Proportional to 2,256.19 and 3,453.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.19 : 3,453.89 = 3,453.89 : x
2. Step 2: Convert to fraction form
   2,256.19/3,453.89 = 3,453.89/x
3. Step 3: Cross multiply
   2,256.19x = 3,453.89 × 3,453.89
4. Step 4: Simplify right side
   2,256.19x = 11,929,360.45
5. Step 5: Solve for x
   x = 11,929,360.45/2,256.19
6. Step 6: Final answer
   x = 5,287.40