Finding the Third Proportional to 1,392,200 and 2,215,282

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,200 : 2,215,282 = 2,215,282 : x
2. Step 2: Convert to fraction form
   1,392,200/2,215,282 = 2,215,282/x
3. Step 3: Cross multiply
   1,392,200x = 2,215,282 × 2,215,282
4. Step 4: Simplify right side
   1,392,200x = 4,907,474,339,524
5. Step 5: Solve for x
   x = 4,907,474,339,524/1,392,200
6. Step 6: Final answer
   x = 3,524,977.98