Finding the Third Proportional to 3,908,066 and 8,484,570

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908,066 : 8,484,570 = 8,484,570 : x
2. Step 2: Convert to fraction form
   3,908,066/8,484,570 = 8,484,570/x
3. Step 3: Cross multiply
   3,908,066x = 8,484,570 × 8,484,570
4. Step 4: Simplify right side
   3,908,066x = 71,987,928,084,900
5. Step 5: Solve for x
   x = 71,987,928,084,900/3,908,066
6. Step 6: Final answer
   x = 18,420,346.04