Finding the Third Proportional to 2,021,819 and 4,397,911

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021,819 : 4,397,911 = 4,397,911 : x
2. Step 2: Convert to fraction form
   2,021,819/4,397,911 = 4,397,911/x
3. Step 3: Cross multiply
   2,021,819x = 4,397,911 × 4,397,911
4. Step 4: Simplify right side
   2,021,819x = 19,341,621,163,921
5. Step 5: Solve for x
   x = 19,341,621,163,921/2,021,819
6. Step 6: Final answer
   x = 9,566,445.45