Finding the Third Proportional to 458,006 and 978,909

Step by Step Solution

1. Step 1: Write the proportion equation
   458,006 : 978,909 = 978,909 : x
2. Step 2: Convert to fraction form
   458,006/978,909 = 978,909/x
3. Step 3: Cross multiply
   458,006x = 978,909 × 978,909
4. Step 4: Simplify right side
   458,006x = 958,262,830,281
5. Step 5: Solve for x
   x = 958,262,830,281/458,006
6. Step 6: Final answer
   x = 2,092,249.51