Finding the Third Proportional to 809,872 and 1,772,288

Step by Step Solution

1. Step 1: Write the proportion equation
   809,872 : 1,772,288 = 1,772,288 : x
2. Step 2: Convert to fraction form
   809,872/1,772,288 = 1,772,288/x
3. Step 3: Cross multiply
   809,872x = 1,772,288 × 1,772,288
4. Step 4: Simplify right side
   809,872x = 3,141,004,754,944
5. Step 5: Solve for x
   x = 3,141,004,754,944/809,872
6. Step 6: Final answer
   x = 3,878,396.53