Finding the Third Proportional to 458,009 and 978,913

Step by Step Solution

1. Step 1: Write the proportion equation
   458,009 : 978,913 = 978,913 : x
2. Step 2: Convert to fraction form
   458,009/978,913 = 978,913/x
3. Step 3: Cross multiply
   458,009x = 978,913 × 978,913
4. Step 4: Simplify right side
   458,009x = 958,270,661,569
5. Step 5: Solve for x
   x = 958,270,661,569/458,009
6. Step 6: Final answer
   x = 2,092,252.91