Finding the Third Proportional to 9,656 and 21,121

Step by Step Solution

1. Step 1: Write the proportion equation
   9,656 : 21,121 = 21,121 : x
2. Step 2: Convert to fraction form
   9,656/21,121 = 21,121/x
3. Step 3: Cross multiply
   9,656x = 21,121 × 21,121
4. Step 4: Simplify right side
   9,656x = 446,096,641
5. Step 5: Solve for x
   x = 446,096,641/9,656
6. Step 6: Final answer
   x = 46,198.91