Finding the Third Proportional to 1,528,212 and 3,321,800

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528,212 : 3,321,800 = 3,321,800 : x
2. Step 2: Convert to fraction form
   1,528,212/3,321,800 = 3,321,800/x
3. Step 3: Cross multiply
   1,528,212x = 3,321,800 × 3,321,800
4. Step 4: Simplify right side
   1,528,212x = 11,034,355,240,000
5. Step 5: Solve for x
   x = 11,034,355,240,000/1,528,212
6. Step 6: Final answer
   x = 7,220,434.89