Finding the Third Proportional to 2,090.18 and 3,155.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.18 : 3,155.20 = 3,155.20 : x
2. Step 2: Convert to fraction form
   2,090.18/3,155.20 = 3,155.20/x
3. Step 3: Cross multiply
   2,090.18x = 3,155.20 × 3,155.20
4. Step 4: Simplify right side
   2,090.18x = 9,955,306.76
5. Step 5: Solve for x
   x = 9,955,306.76/2,090.18
6. Step 6: Final answer
   x = 4,762.90