Finding the Third Proportional to 4,729,849 and 7,212,878

Step by Step Solution

1. Step 1: Write the proportion equation
   4,729,849 : 7,212,878 = 7,212,878 : x
2. Step 2: Convert to fraction form
   4,729,849/7,212,878 = 7,212,878/x
3. Step 3: Cross multiply
   4,729,849x = 7,212,878 × 7,212,878
4. Step 4: Simplify right side
   4,729,849x = 52,025,609,042,884
5. Step 5: Solve for x
   x = 52,025,609,042,884/4,729,849
6. Step 6: Final answer
   x = 10,999,422.82