Finding the Third Proportional to 1,321,890 and 1,783,542

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,890 : 1,783,542 = 1,783,542 : x
2. Step 2: Convert to fraction form
   1,321,890/1,783,542 = 1,783,542/x
3. Step 3: Cross multiply
   1,321,890x = 1,783,542 × 1,783,542
4. Step 4: Simplify right side
   1,321,890x = 3,181,022,065,764
5. Step 5: Solve for x
   x = 3,181,022,065,764/1,321,890
6. Step 6: Final answer
   x = 2,406,419.65