Finding the Third Proportional to 11,982 and 28,479

Step by Step Solution

1. Step 1: Write the proportion equation
   11,982 : 28,479 = 28,479 : x
2. Step 2: Convert to fraction form
   11,982/28,479 = 28,479/x
3. Step 3: Cross multiply
   11,982x = 28,479 × 28,479
4. Step 4: Simplify right side
   11,982x = 811,053,441
5. Step 5: Solve for x
   x = 811,053,441/11,982
6. Step 6: Final answer
   x = 67,689.32