Finding the Third Proportional to 3,811,680 and 8,379,084

Step by Step Solution

1. Step 1: Write the proportion equation
   3,811,680 : 8,379,084 = 8,379,084 : x
2. Step 2: Convert to fraction form
   3,811,680/8,379,084 = 8,379,084/x
3. Step 3: Cross multiply
   3,811,680x = 8,379,084 × 8,379,084
4. Step 4: Simplify right side
   3,811,680x = 70,209,048,679,056
5. Step 5: Solve for x
   x = 70,209,048,679,056/3,811,680
6. Step 6: Final answer
   x = 18,419,449.87