Finding the Third Proportional to 5,104.50 and 10,425

Step by Step Solution

1. Step 1: Write the proportion equation
   5,104.50 : 10,425 = 10,425 : x
2. Step 2: Convert to fraction form
   5,104.50/10,425 = 10,425/x
3. Step 3: Cross multiply
   5,104.50x = 10,425 × 10,425
4. Step 4: Simplify right side
   5,104.50x = 108,680,625
5. Step 5: Solve for x
   x = 108,680,625/5,104.50
6. Step 6: Final answer
   x = 21,291.14