Finding the Third Proportional to 9,904 and 13,621

Step by Step Solution

1. Step 1: Write the proportion equation
   9,904 : 13,621 = 13,621 : x
2. Step 2: Convert to fraction form
   9,904/13,621 = 13,621/x
3. Step 3: Cross multiply
   9,904x = 13,621 × 13,621
4. Step 4: Simplify right side
   9,904x = 185,531,641
5. Step 5: Solve for x
   x = 185,531,641/9,904
6. Step 6: Final answer
   x = 18,733.00