Finding the Third Proportional to 1,421,343 and 3,108,406

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421,343 : 3,108,406 = 3,108,406 : x
2. Step 2: Convert to fraction form
   1,421,343/3,108,406 = 3,108,406/x
3. Step 3: Cross multiply
   1,421,343x = 3,108,406 × 3,108,406
4. Step 4: Simplify right side
   1,421,343x = 9,662,187,860,836
5. Step 5: Solve for x
   x = 9,662,187,860,836/1,421,343
6. Step 6: Final answer
   x = 6,797,928.34