Finding the Third Proportional to 9,962 and 21,679

Step by Step Solution

1. Step 1: Write the proportion equation
   9,962 : 21,679 = 21,679 : x
2. Step 2: Convert to fraction form
   9,962/21,679 = 21,679/x
3. Step 3: Cross multiply
   9,962x = 21,679 × 21,679
4. Step 4: Simplify right side
   9,962x = 469,979,041
5. Step 5: Solve for x
   x = 469,979,041/9,962
6. Step 6: Final answer
   x = 47,177.18