Finding the Third Proportional to 13,932 and 30,780

Step by Step Solution

1. Step 1: Write the proportion equation
   13,932 : 30,780 = 30,780 : x
2. Step 2: Convert to fraction form
   13,932/30,780 = 30,780/x
3. Step 3: Cross multiply
   13,932x = 30,780 × 30,780
4. Step 4: Simplify right side
   13,932x = 947,408,400
5. Step 5: Solve for x
   x = 947,408,400/13,932
6. Step 6: Final answer
   x = 68,002.33