Finding the Third Proportional to 809,621 and 1,776,706

Step by Step Solution

1. Step 1: Write the proportion equation
   809,621 : 1,776,706 = 1,776,706 : x
2. Step 2: Convert to fraction form
   809,621/1,776,706 = 1,776,706/x
3. Step 3: Cross multiply
   809,621x = 1,776,706 × 1,776,706
4. Step 4: Simplify right side
   809,621x = 3,156,684,210,436
5. Step 5: Solve for x
   x = 3,156,684,210,436/809,621
6. Step 6: Final answer
   x = 3,898,965.33