Finding the Third Proportional to 1,220,214 and 1,855,200

Step by Step Solution

1. Step 1: Write the proportion equation
   1,220,214 : 1,855,200 = 1,855,200 : x
2. Step 2: Convert to fraction form
   1,220,214/1,855,200 = 1,855,200/x
3. Step 3: Cross multiply
   1,220,214x = 1,855,200 × 1,855,200
4. Step 4: Simplify right side
   1,220,214x = 3,441,767,040,000
5. Step 5: Solve for x
   x = 3,441,767,040,000/1,220,214
6. Step 6: Final answer
   x = 2,820,625.76