Finding the Third Proportional to 9,820 and 21,197

Step by Step Solution

1. Step 1: Write the proportion equation
   9,820 : 21,197 = 21,197 : x
2. Step 2: Convert to fraction form
   9,820/21,197 = 21,197/x
3. Step 3: Cross multiply
   9,820x = 21,197 × 21,197
4. Step 4: Simplify right side
   9,820x = 449,312,809
5. Step 5: Solve for x
   x = 449,312,809/9,820
6. Step 6: Final answer
   x = 45,754.87