Finding the Third Proportional to 630,702 and 978,448

Step by Step Solution

1. Step 1: Write the proportion equation
   630,702 : 978,448 = 978,448 : x
2. Step 2: Convert to fraction form
   630,702/978,448 = 978,448/x
3. Step 3: Cross multiply
   630,702x = 978,448 × 978,448
4. Step 4: Simplify right side
   630,702x = 957,360,488,704
5. Step 5: Solve for x
   x = 957,360,488,704/630,702
6. Step 6: Final answer
   x = 1,517,928.42