Finding the Third Proportional to 3,181,378 and 4,818,399

Step by Step Solution

1. Step 1: Write the proportion equation
   3,181,378 : 4,818,399 = 4,818,399 : x
2. Step 2: Convert to fraction form
   3,181,378/4,818,399 = 4,818,399/x
3. Step 3: Cross multiply
   3,181,378x = 4,818,399 × 4,818,399
4. Step 4: Simplify right side
   3,181,378x = 23,216,968,923,201
5. Step 5: Solve for x
   x = 23,216,968,923,201/3,181,378
6. Step 6: Final answer
   x = 7,297,771.26