Finding the Third Proportional to 442,769 and 978,572

Step by Step Solution

1. Step 1: Write the proportion equation
   442,769 : 978,572 = 978,572 : x
2. Step 2: Convert to fraction form
   442,769/978,572 = 978,572/x
3. Step 3: Cross multiply
   442,769x = 978,572 × 978,572
4. Step 4: Simplify right side
   442,769x = 957,603,159,184
5. Step 5: Solve for x
   x = 957,603,159,184/442,769
6. Step 6: Final answer
   x = 2,162,760.17