Finding the Third Proportional to 9,664 and 20,516

Step by Step Solution

1. Step 1: Write the proportion equation
   9,664 : 20,516 = 20,516 : x
2. Step 2: Convert to fraction form
   9,664/20,516 = 20,516/x
3. Step 3: Cross multiply
   9,664x = 20,516 × 20,516
4. Step 4: Simplify right side
   9,664x = 420,906,256
5. Step 5: Solve for x
   x = 420,906,256/9,664
6. Step 6: Final answer
   x = 43,554.04