Finding the Third Proportional to 2,485.13 and 5,173.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.13 : 5,173.88 = 5,173.88 : x
2. Step 2: Convert to fraction form
   2,485.13/5,173.88 = 5,173.88/x
3. Step 3: Cross multiply
   2,485.13x = 5,173.88 × 5,173.88
4. Step 4: Simplify right side
   2,485.13x = 26,768,982.52
5. Step 5: Solve for x
   x = 26,768,982.52/2,485.13
6. Step 6: Final answer
   x = 10,771.68