Finding the Third Proportional to 15,990 and 33,928

Step by Step Solution

1. Step 1: Write the proportion equation
   15,990 : 33,928 = 33,928 : x
2. Step 2: Convert to fraction form
   15,990/33,928 = 33,928/x
3. Step 3: Cross multiply
   15,990x = 33,928 × 33,928
4. Step 4: Simplify right side
   15,990x = 1,151,109,184
5. Step 5: Solve for x
   x = 1,151,109,184/15,990
6. Step 6: Final answer
   x = 71,989.32