Finding the Third Proportional to 646,692 and 1,410,856

Step by Step Solution

1. Step 1: Write the proportion equation
   646,692 : 1,410,856 = 1,410,856 : x
2. Step 2: Convert to fraction form
   646,692/1,410,856 = 1,410,856/x
3. Step 3: Cross multiply
   646,692x = 1,410,856 × 1,410,856
4. Step 4: Simplify right side
   646,692x = 1,990,514,652,736
5. Step 5: Solve for x
   x = 1,990,514,652,736/646,692
6. Step 6: Final answer
   x = 3,077,994.86