Finding the Third Proportional to 1,321,918 and 1,783,580

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,918 : 1,783,580 = 1,783,580 : x
2. Step 2: Convert to fraction form
   1,321,918/1,783,580 = 1,783,580/x
3. Step 3: Cross multiply
   1,321,918x = 1,783,580 × 1,783,580
4. Step 4: Simplify right side
   1,321,918x = 3,181,157,616,400
5. Step 5: Solve for x
   x = 3,181,157,616,400/1,321,918
6. Step 6: Final answer
   x = 2,406,471.22