Finding the Third Proportional to 16,872 and 36,300

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872 : 36,300 = 36,300 : x
2. Step 2: Convert to fraction form
   16,872/36,300 = 36,300/x
3. Step 3: Cross multiply
   16,872x = 36,300 × 36,300
4. Step 4: Simplify right side
   16,872x = 1,317,690,000
5. Step 5: Solve for x
   x = 1,317,690,000/16,872
6. Step 6: Final answer
   x = 78,099.22