Finding the Third Proportional to 10,198 and 21,051

Step by Step Solution

1. Step 1: Write the proportion equation
   10,198 : 21,051 = 21,051 : x
2. Step 2: Convert to fraction form
   10,198/21,051 = 21,051/x
3. Step 3: Cross multiply
   10,198x = 21,051 × 21,051
4. Step 4: Simplify right side
   10,198x = 443,144,601
5. Step 5: Solve for x
   x = 443,144,601/10,198
6. Step 6: Final answer
   x = 43,454.07