Finding the Third Proportional to 2,555 and 3,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555 : 3,687.50 = 3,687.50 : x
2. Step 2: Convert to fraction form
   2,555/3,687.50 = 3,687.50/x
3. Step 3: Cross multiply
   2,555x = 3,687.50 × 3,687.50
4. Step 4: Simplify right side
   2,555x = 13,597,656.25
5. Step 5: Solve for x
   x = 13,597,656.25/2,555
6. Step 6: Final answer
   x = 5,321.98