Finding the Third Proportional to 442,710 and 978,450

Step by Step Solution

1. Step 1: Write the proportion equation
   442,710 : 978,450 = 978,450 : x
2. Step 2: Convert to fraction form
   442,710/978,450 = 978,450/x
3. Step 3: Cross multiply
   442,710x = 978,450 × 978,450
4. Step 4: Simplify right side
   442,710x = 957,364,402,500
5. Step 5: Solve for x
   x = 957,364,402,500/442,710
6. Step 6: Final answer
   x = 2,162,509.10