Finding the Third Proportional to 2,157.38 and 3,281.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157.38 : 3,281.63 = 3,281.63 : x
2. Step 2: Convert to fraction form
   2,157.38/3,281.63 = 3,281.63/x
3. Step 3: Cross multiply
   2,157.38x = 3,281.63 × 3,281.63
4. Step 4: Simplify right side
   2,157.38x = 10,769,062.64
5. Step 5: Solve for x
   x = 10,769,062.64/2,157.38
6. Step 6: Final answer
   x = 4,991.74