Finding the Third Proportional to 2,666.25 and 3,985.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.25 : 3,985.88 = 3,985.88 : x
2. Step 2: Convert to fraction form
   2,666.25/3,985.88 = 3,985.88/x
3. Step 3: Cross multiply
   2,666.25x = 3,985.88 × 3,985.88
4. Step 4: Simplify right side
   2,666.25x = 15,887,199.52
5. Step 5: Solve for x
   x = 15,887,199.52/2,666.25
6. Step 6: Final answer
   x = 5,958.63