Finding the Third Proportional to 7,988 and 10,478

Step by Step Solution

1. Step 1: Write the proportion equation
   7,988 : 10,478 = 10,478 : x
2. Step 2: Convert to fraction form
   7,988/10,478 = 10,478/x
3. Step 3: Cross multiply
   7,988x = 10,478 × 10,478
4. Step 4: Simplify right side
   7,988x = 109,788,484
5. Step 5: Solve for x
   x = 109,788,484/7,988
6. Step 6: Final answer
   x = 13,744.18