Finding the Third Proportional to 4,851.56 and 10,143.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,851.56 : 10,143.56 = 10,143.56 : x
2. Step 2: Convert to fraction form
   4,851.56/10,143.56 = 10,143.56/x
3. Step 3: Cross multiply
   4,851.56x = 10,143.56 × 10,143.56
4. Step 4: Simplify right side
   4,851.56x = 102,891,860.19
5. Step 5: Solve for x
   x = 102,891,860.19/4,851.56
6. Step 6: Final answer
   x = 21,207.98