Finding the Third Proportional to 1,587.09 and 3,319.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,587.09 : 3,319.42 = 3,319.42 : x
2. Step 2: Convert to fraction form
   1,587.09/3,319.42 = 3,319.42/x
3. Step 3: Cross multiply
   1,587.09x = 3,319.42 × 3,319.42
4. Step 4: Simplify right side
   1,587.09x = 11,018,535.65
5. Step 5: Solve for x
   x = 11,018,535.65/1,587.09
6. Step 6: Final answer
   x = 6,942.59