Finding the Third Proportional to 823,872 and 1,780,990

Step by Step Solution

1. Step 1: Write the proportion equation
   823,872 : 1,780,990 = 1,780,990 : x
2. Step 2: Convert to fraction form
   823,872/1,780,990 = 1,780,990/x
3. Step 3: Cross multiply
   823,872x = 1,780,990 × 1,780,990
4. Step 4: Simplify right side
   823,872x = 3,171,925,380,100
5. Step 5: Solve for x
   x = 3,171,925,380,100/823,872
6. Step 6: Final answer
   x = 3,850,022.07