Finding the Third Proportional to 1,521,458 and 3,212,679

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521,458 : 3,212,679 = 3,212,679 : x
2. Step 2: Convert to fraction form
   1,521,458/3,212,679 = 3,212,679/x
3. Step 3: Cross multiply
   1,521,458x = 3,212,679 × 3,212,679
4. Step 4: Simplify right side
   1,521,458x = 10,321,306,357,041
5. Step 5: Solve for x
   x = 10,321,306,357,041/1,521,458
6. Step 6: Final answer
   x = 6,783,826.01