Finding the Third Proportional to 5,310.56 and 10,851.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,310.56 : 10,851.47 = 10,851.47 : x
2. Step 2: Convert to fraction form
   5,310.56/10,851.47 = 10,851.47/x
3. Step 3: Cross multiply
   5,310.56x = 10,851.47 × 10,851.47
4. Step 4: Simplify right side
   5,310.56x = 117,754,374.03
5. Step 5: Solve for x
   x = 117,754,374.03/5,310.56
6. Step 6: Final answer
   x = 22,173.62