Finding the Third Proportional to 3,869,828 and 9,036,706

Step by Step Solution

1. Step 1: Write the proportion equation
   3,869,828 : 9,036,706 = 9,036,706 : x
2. Step 2: Convert to fraction form
   3,869,828/9,036,706 = 9,036,706/x
3. Step 3: Cross multiply
   3,869,828x = 9,036,706 × 9,036,706
4. Step 4: Simplify right side
   3,869,828x = 81,662,055,330,436
5. Step 5: Solve for x
   x = 81,662,055,330,436/3,869,828
6. Step 6: Final answer
   x = 21,102,244.16