Finding the Third Proportional to 2,218,328 and 3,425,312

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218,328 : 3,425,312 = 3,425,312 : x
2. Step 2: Convert to fraction form
   2,218,328/3,425,312 = 3,425,312/x
3. Step 3: Cross multiply
   2,218,328x = 3,425,312 × 3,425,312
4. Step 4: Simplify right side
   2,218,328x = 11,732,762,297,344
5. Step 5: Solve for x
   x = 11,732,762,297,344/2,218,328
6. Step 6: Final answer
   x = 5,289,011.50