Finding the Third Proportional to 2,890.69 and 3,159

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890.69 : 3,159 = 3,159 : x
2. Step 2: Convert to fraction form
   2,890.69/3,159 = 3,159/x
3. Step 3: Cross multiply
   2,890.69x = 3,159 × 3,159
4. Step 4: Simplify right side
   2,890.69x = 9,979,281
5. Step 5: Solve for x
   x = 9,979,281/2,890.69
6. Step 6: Final answer
   x = 3,452.22