Finding the Third Proportional to 809,613 and 1,776,690

Step by Step Solution

1. Step 1: Write the proportion equation
   809,613 : 1,776,690 = 1,776,690 : x
2. Step 2: Convert to fraction form
   809,613/1,776,690 = 1,776,690/x
3. Step 3: Cross multiply
   809,613x = 1,776,690 × 1,776,690
4. Step 4: Simplify right side
   809,613x = 3,156,627,356,100
5. Step 5: Solve for x
   x = 3,156,627,356,100/809,613
6. Step 6: Final answer
   x = 3,898,933.63