Finding the Third Proportional to 3,843,111,672 and 8,390,915,568

Step by Step Solution

1. Step 1: Write the proportion equation
   3,843,111,672 : 8,390,915,568 = 8,390,915,568 : x
2. Step 2: Convert to fraction form
   3,843,111,672/8,390,915,568 = 8,390,915,568/x
3. Step 3: Cross multiply
   3,843,111,672x = 8,390,915,568 × 8,390,915,568
4. Step 4: Simplify right side
   3,843,111,672x = 70,407,464,069,304,762,368
5. Step 5: Solve for x
   x = 70,407,464,069,304,762,368/3,843,111,672
6. Step 6: Final answer
   x = 18,320,431,483.24