Finding the Third Proportional to 442,745 and 978,520

Step by Step Solution

1. Step 1: Write the proportion equation
   442,745 : 978,520 = 978,520 : x
2. Step 2: Convert to fraction form
   442,745/978,520 = 978,520/x
3. Step 3: Cross multiply
   442,745x = 978,520 × 978,520
4. Step 4: Simplify right side
   442,745x = 957,501,390,400
5. Step 5: Solve for x
   x = 957,501,390,400/442,745
6. Step 6: Final answer
   x = 2,162,647.55