Finding the Third Proportional to 458,008 and 978,911

Step by Step Solution

1. Step 1: Write the proportion equation
   458,008 : 978,911 = 978,911 : x
2. Step 2: Convert to fraction form
   458,008/978,911 = 978,911/x
3. Step 3: Cross multiply
   458,008x = 978,911 × 978,911
4. Step 4: Simplify right side
   458,008x = 958,266,745,921
5. Step 5: Solve for x
   x = 958,266,745,921/458,008
6. Step 6: Final answer
   x = 2,092,248.93