Finding the Third Proportional to 654,867 and 978,259

Step by Step Solution

1. Step 1: Write the proportion equation
   654,867 : 978,259 = 978,259 : x
2. Step 2: Convert to fraction form
   654,867/978,259 = 978,259/x
3. Step 3: Cross multiply
   654,867x = 978,259 × 978,259
4. Step 4: Simplify right side
   654,867x = 956,990,671,081
5. Step 5: Solve for x
   x = 956,990,671,081/654,867
6. Step 6: Final answer
   x = 1,461,351.19