Finding the Third Proportional to 5,116.50 and 10,449

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.50 : 10,449 = 10,449 : x
2. Step 2: Convert to fraction form
   5,116.50/10,449 = 10,449/x
3. Step 3: Cross multiply
   5,116.50x = 10,449 × 10,449
4. Step 4: Simplify right side
   5,116.50x = 109,181,601
5. Step 5: Solve for x
   x = 109,181,601/5,116.50
6. Step 6: Final answer
   x = 21,339.12