Finding the Third Proportional to 9,788 and 13,988

Step by Step Solution

1. Step 1: Write the proportion equation
   9,788 : 13,988 = 13,988 : x
2. Step 2: Convert to fraction form
   9,788/13,988 = 13,988/x
3. Step 3: Cross multiply
   9,788x = 13,988 × 13,988
4. Step 4: Simplify right side
   9,788x = 195,664,144
5. Step 5: Solve for x
   x = 195,664,144/9,788
6. Step 6: Final answer
   x = 19,990.21