Finding the Third Proportional to 380,443 and 899,707

Step by Step Solution

1. Step 1: Write the proportion equation
   380,443 : 899,707 = 899,707 : x
2. Step 2: Convert to fraction form
   380,443/899,707 = 899,707/x
3. Step 3: Cross multiply
   380,443x = 899,707 × 899,707
4. Step 4: Simplify right side
   380,443x = 809,472,685,849
5. Step 5: Solve for x
   x = 809,472,685,849/380,443
6. Step 6: Final answer
   x = 2,127,710.82