Finding the Third Proportional to 442,724 and 978,476

Step by Step Solution

1. Step 1: Write the proportion equation
   442,724 : 978,476 = 978,476 : x
2. Step 2: Convert to fraction form
   442,724/978,476 = 978,476/x
3. Step 3: Cross multiply
   442,724x = 978,476 × 978,476
4. Step 4: Simplify right side
   442,724x = 957,415,282,576
5. Step 5: Solve for x
   x = 957,415,282,576/442,724
6. Step 6: Final answer
   x = 2,162,555.64