Finding the Third Proportional to 2,240.25 and 3,421.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.25 : 3,421.50 = 3,421.50 : x
2. Step 2: Convert to fraction form
   2,240.25/3,421.50 = 3,421.50/x
3. Step 3: Cross multiply
   2,240.25x = 3,421.50 × 3,421.50
4. Step 4: Simplify right side
   2,240.25x = 11,706,662.25
5. Step 5: Solve for x
   x = 11,706,662.25/2,240.25
6. Step 6: Final answer
   x = 5,225.61