Finding the Third Proportional to 4,729,822 and 7,212,828

Step by Step Solution

1. Step 1: Write the proportion equation
   4,729,822 : 7,212,828 = 7,212,828 : x
2. Step 2: Convert to fraction form
   4,729,822/7,212,828 = 7,212,828/x
3. Step 3: Cross multiply
   4,729,822x = 7,212,828 × 7,212,828
4. Step 4: Simplify right side
   4,729,822x = 52,024,887,757,584
5. Step 5: Solve for x
   x = 52,024,887,757,584/4,729,822
6. Step 6: Final answer
   x = 10,999,333.12