Finding the Third Proportional to 17,880 and 19,608

Step by Step Solution

1. Step 1: Write the proportion equation
   17,880 : 19,608 = 19,608 : x
2. Step 2: Convert to fraction form
   17,880/19,608 = 19,608/x
3. Step 3: Cross multiply
   17,880x = 19,608 × 19,608
4. Step 4: Simplify right side
   17,880x = 384,473,664
5. Step 5: Solve for x
   x = 384,473,664/17,880
6. Step 6: Final answer
   x = 21,503.00