Finding the Third Proportional to 3,880,680 and 8,440,885

Step by Step Solution

1. Step 1: Write the proportion equation
   3,880,680 : 8,440,885 = 8,440,885 : x
2. Step 2: Convert to fraction form
   3,880,680/8,440,885 = 8,440,885/x
3. Step 3: Cross multiply
   3,880,680x = 8,440,885 × 8,440,885
4. Step 4: Simplify right side
   3,880,680x = 71,248,539,583,225
5. Step 5: Solve for x
   x = 71,248,539,583,225/3,880,680
6. Step 6: Final answer
   x = 18,359,807.97