Finding the Third Proportional to 2,021,815 and 4,397,903

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021,815 : 4,397,903 = 4,397,903 : x
2. Step 2: Convert to fraction form
   2,021,815/4,397,903 = 4,397,903/x
3. Step 3: Cross multiply
   2,021,815x = 4,397,903 × 4,397,903
4. Step 4: Simplify right side
   2,021,815x = 19,341,550,797,409
5. Step 5: Solve for x
   x = 19,341,550,797,409/2,021,815
6. Step 6: Final answer
   x = 9,566,429.57