Finding the Third Proportional to 12,780 and 30,492

Step by Step Solution

1. Step 1: Write the proportion equation
   12,780 : 30,492 = 30,492 : x
2. Step 2: Convert to fraction form
   12,780/30,492 = 30,492/x
3. Step 3: Cross multiply
   12,780x = 30,492 × 30,492
4. Step 4: Simplify right side
   12,780x = 929,762,064
5. Step 5: Solve for x
   x = 929,762,064/12,780
6. Step 6: Final answer
   x = 72,751.34