Finding the Third Proportional to 9,640 and 20,384

Step by Step Solution

1. Step 1: Write the proportion equation
   9,640 : 20,384 = 20,384 : x
2. Step 2: Convert to fraction form
   9,640/20,384 = 20,384/x
3. Step 3: Cross multiply
   9,640x = 20,384 × 20,384
4. Step 4: Simplify right side
   9,640x = 415,507,456
5. Step 5: Solve for x
   x = 415,507,456/9,640
6. Step 6: Final answer
   x = 43,102.43