Finding the Third Proportional to 451,846 and 978,078

Step by Step Solution

1. Step 1: Write the proportion equation
   451,846 : 978,078 = 978,078 : x
2. Step 2: Convert to fraction form
   451,846/978,078 = 978,078/x
3. Step 3: Cross multiply
   451,846x = 978,078 × 978,078
4. Step 4: Simplify right side
   451,846x = 956,636,574,084
5. Step 5: Solve for x
   x = 956,636,574,084/451,846
6. Step 6: Final answer
   x = 2,117,173.94