Finding the Third Proportional to 442,704 and 978,438

Step by Step Solution

1. Step 1: Write the proportion equation
   442,704 : 978,438 = 978,438 : x
2. Step 2: Convert to fraction form
   442,704/978,438 = 978,438/x
3. Step 3: Cross multiply
   442,704x = 978,438 × 978,438
4. Step 4: Simplify right side
   442,704x = 957,340,919,844
5. Step 5: Solve for x
   x = 957,340,919,844/442,704
6. Step 6: Final answer
   x = 2,162,485.36