Finding the Third Proportional to 451,888 and 978,170

Step by Step Solution

1. Step 1: Write the proportion equation
   451,888 : 978,170 = 978,170 : x
2. Step 2: Convert to fraction form
   451,888/978,170 = 978,170/x
3. Step 3: Cross multiply
   451,888x = 978,170 × 978,170
4. Step 4: Simplify right side
   451,888x = 956,816,548,900
5. Step 5: Solve for x
   x = 956,816,548,900/451,888
6. Step 6: Final answer
   x = 2,117,375.43