Finding the Third Proportional to 4,978 and 10,244

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978 : 10,244 = 10,244 : x
2. Step 2: Convert to fraction form
   4,978/10,244 = 10,244/x
3. Step 3: Cross multiply
   4,978x = 10,244 × 10,244
4. Step 4: Simplify right side
   4,978x = 104,939,536
5. Step 5: Solve for x
   x = 104,939,536/4,978
6. Step 6: Final answer
   x = 21,080.66