Finding the Third Proportional to 2,272.90 and 3,321.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,272.90 : 3,321.20 = 3,321.20 : x
2. Step 2: Convert to fraction form
   2,272.90/3,321.20 = 3,321.20/x
3. Step 3: Cross multiply
   2,272.90x = 3,321.20 × 3,321.20
4. Step 4: Simplify right side
   2,272.90x = 11,030,354.52
5. Step 5: Solve for x
   x = 11,030,354.52/2,272.90
6. Step 6: Final answer
   x = 4,852.98