Finding the Third Proportional to 809,870 and 1,772,284

Step by Step Solution

1. Step 1: Write the proportion equation
   809,870 : 1,772,284 = 1,772,284 : x
2. Step 2: Convert to fraction form
   809,870/1,772,284 = 1,772,284/x
3. Step 3: Cross multiply
   809,870x = 1,772,284 × 1,772,284
4. Step 4: Simplify right side
   809,870x = 3,140,990,576,656
5. Step 5: Solve for x
   x = 3,140,990,576,656/809,870
6. Step 6: Final answer
   x = 3,878,388.60