Finding the Third Proportional to 1,321,921 and 1,783,581

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,921 : 1,783,581 = 1,783,581 : x
2. Step 2: Convert to fraction form
   1,321,921/1,783,581 = 1,783,581/x
3. Step 3: Cross multiply
   1,321,921x = 1,783,581 × 1,783,581
4. Step 4: Simplify right side
   1,321,921x = 3,181,161,183,561
5. Step 5: Solve for x
   x = 3,181,161,183,561/1,321,921
6. Step 6: Final answer
   x = 2,406,468.45