Finding the Third Proportional to 17,880 and 19,896

Step by Step Solution

1. Step 1: Write the proportion equation
   17,880 : 19,896 = 19,896 : x
2. Step 2: Convert to fraction form
   17,880/19,896 = 19,896/x
3. Step 3: Cross multiply
   17,880x = 19,896 × 19,896
4. Step 4: Simplify right side
   17,880x = 395,850,816
5. Step 5: Solve for x
   x = 395,850,816/17,880
6. Step 6: Final answer
   x = 22,139.31