Finding the Third Proportional to 451,870 and 978,134

Step by Step Solution

1. Step 1: Write the proportion equation
   451,870 : 978,134 = 978,134 : x
2. Step 2: Convert to fraction form
   451,870/978,134 = 978,134/x
3. Step 3: Cross multiply
   451,870x = 978,134 × 978,134
4. Step 4: Simplify right side
   451,870x = 956,746,121,956
5. Step 5: Solve for x
   x = 956,746,121,956/451,870
6. Step 6: Final answer
   x = 2,117,303.92