Finding the Third Proportional to 9,788 and 21,817

Step by Step Solution

1. Step 1: Write the proportion equation
   9,788 : 21,817 = 21,817 : x
2. Step 2: Convert to fraction form
   9,788/21,817 = 21,817/x
3. Step 3: Cross multiply
   9,788x = 21,817 × 21,817
4. Step 4: Simplify right side
   9,788x = 475,981,489
5. Step 5: Solve for x
   x = 475,981,489/9,788
6. Step 6: Final answer
   x = 48,629.09