Finding the Third Proportional to 1,818,928 and 3,960,778

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818,928 : 3,960,778 = 3,960,778 : x
2. Step 2: Convert to fraction form
   1,818,928/3,960,778 = 3,960,778/x
3. Step 3: Cross multiply
   1,818,928x = 3,960,778 × 3,960,778
4. Step 4: Simplify right side
   1,818,928x = 15,687,762,365,284
5. Step 5: Solve for x
   x = 15,687,762,365,284/1,818,928
6. Step 6: Final answer
   x = 8,624,729.71