Finding the Third Proportional to 1,657.87 and 2,587.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,657.87 : 2,587.72 = 2,587.72 : x
2. Step 2: Convert to fraction form
   1,657.87/2,587.72 = 2,587.72/x
3. Step 3: Cross multiply
   1,657.87x = 2,587.72 × 2,587.72
4. Step 4: Simplify right side
   1,657.87x = 6,696,287.70
5. Step 5: Solve for x
   x = 6,696,287.70/1,657.87
6. Step 6: Final answer
   x = 4,039.09