Finding the Third Proportional to 809,842 and 1,772,212

Step by Step Solution

1. Step 1: Write the proportion equation
   809,842 : 1,772,212 = 1,772,212 : x
2. Step 2: Convert to fraction form
   809,842/1,772,212 = 1,772,212/x
3. Step 3: Cross multiply
   809,842x = 1,772,212 × 1,772,212
4. Step 4: Simplify right side
   809,842x = 3,140,735,372,944
5. Step 5: Solve for x
   x = 3,140,735,372,944/809,842
6. Step 6: Final answer
   x = 3,878,207.57