Finding the Third Proportional to 450,423 and 978,723

Step by Step Solution

1. Step 1: Write the proportion equation
   450,423 : 978,723 = 978,723 : x
2. Step 2: Convert to fraction form
   450,423/978,723 = 978,723/x
3. Step 3: Cross multiply
   450,423x = 978,723 × 978,723
4. Step 4: Simplify right side
   450,423x = 957,898,710,729
5. Step 5: Solve for x
   x = 957,898,710,729/450,423
6. Step 6: Final answer
   x = 2,126,664.74