Finding the Third Proportional to 1,390,772 and 2,105,652

Step by Step Solution

1. Step 1: Write the proportion equation
   1,390,772 : 2,105,652 = 2,105,652 : x
2. Step 2: Convert to fraction form
   1,390,772/2,105,652 = 2,105,652/x
3. Step 3: Cross multiply
   1,390,772x = 2,105,652 × 2,105,652
4. Step 4: Simplify right side
   1,390,772x = 4,433,770,345,104
5. Step 5: Solve for x
   x = 4,433,770,345,104/1,390,772
6. Step 6: Final answer
   x = 3,187,992.24