Finding the Third Proportional to 654,918 and 978,330

Step by Step Solution

1. Step 1: Write the proportion equation
   654,918 : 978,330 = 978,330 : x
2. Step 2: Convert to fraction form
   654,918/978,330 = 978,330/x
3. Step 3: Cross multiply
   654,918x = 978,330 × 978,330
4. Step 4: Simplify right side
   654,918x = 957,129,588,900
5. Step 5: Solve for x
   x = 957,129,588,900/654,918
6. Step 6: Final answer
   x = 1,461,449.51