Finding the Third Proportional to 858,462 and 1,328,648

Step by Step Solution

1. Step 1: Write the proportion equation
   858,462 : 1,328,648 = 1,328,648 : x
2. Step 2: Convert to fraction form
   858,462/1,328,648 = 1,328,648/x
3. Step 3: Cross multiply
   858,462x = 1,328,648 × 1,328,648
4. Step 4: Simplify right side
   858,462x = 1,765,305,507,904
5. Step 5: Solve for x
   x = 1,765,305,507,904/858,462
6. Step 6: Final answer
   x = 2,056,358.36