Finding the Third Proportional to 2,216,421 and 3,369,321

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216,421 : 3,369,321 = 3,369,321 : x
2. Step 2: Convert to fraction form
   2,216,421/3,369,321 = 3,369,321/x
3. Step 3: Cross multiply
   2,216,421x = 3,369,321 × 3,369,321
4. Step 4: Simplify right side
   2,216,421x = 11,352,324,001,041
5. Step 5: Solve for x
   x = 11,352,324,001,041/2,216,421
6. Step 6: Final answer
   x = 5,121,916.82