Finding the Third Proportional to 13,990 and 21,662

Step by Step Solution

1. Step 1: Write the proportion equation
   13,990 : 21,662 = 21,662 : x
2. Step 2: Convert to fraction form
   13,990/21,662 = 21,662/x
3. Step 3: Cross multiply
   13,990x = 21,662 × 21,662
4. Step 4: Simplify right side
   13,990x = 469,242,244
5. Step 5: Solve for x
   x = 469,242,244/13,990
6. Step 6: Final answer
   x = 33,541.26