Finding the Third Proportional to 442,726 and 978,480

Step by Step Solution

1. Step 1: Write the proportion equation
   442,726 : 978,480 = 978,480 : x
2. Step 2: Convert to fraction form
   442,726/978,480 = 978,480/x
3. Step 3: Cross multiply
   442,726x = 978,480 × 978,480
4. Step 4: Simplify right side
   442,726x = 957,423,110,400
5. Step 5: Solve for x
   x = 957,423,110,400/442,726
6. Step 6: Final answer
   x = 2,162,563.55