Finding the Third Proportional to 9,709 and 21,036

Step by Step Solution

1. Step 1: Write the proportion equation
   9,709 : 21,036 = 21,036 : x
2. Step 2: Convert to fraction form
   9,709/21,036 = 21,036/x
3. Step 3: Cross multiply
   9,709x = 21,036 × 21,036
4. Step 4: Simplify right side
   9,709x = 442,513,296
5. Step 5: Solve for x
   x = 442,513,296/9,709
6. Step 6: Final answer
   x = 45,577.64