Finding the Third Proportional to 646,676 and 1,410,824

Step by Step Solution

1. Step 1: Write the proportion equation
   646,676 : 1,410,824 = 1,410,824 : x
2. Step 2: Convert to fraction form
   646,676/1,410,824 = 1,410,824/x
3. Step 3: Cross multiply
   646,676x = 1,410,824 × 1,410,824
4. Step 4: Simplify right side
   646,676x = 1,990,424,358,976
5. Step 5: Solve for x
   x = 1,990,424,358,976/646,676
6. Step 6: Final answer
   x = 3,077,931.39