Finding the Third Proportional to 2,130,028 and 3,217,218

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130,028 : 3,217,218 = 3,217,218 : x
2. Step 2: Convert to fraction form
   2,130,028/3,217,218 = 3,217,218/x
3. Step 3: Cross multiply
   2,130,028x = 3,217,218 × 3,217,218
4. Step 4: Simplify right side
   2,130,028x = 10,350,491,659,524
5. Step 5: Solve for x
   x = 10,350,491,659,524/2,130,028
6. Step 6: Final answer
   x = 4,859,321.88