Finding the Third Proportional to 455,021 and 978,730

Step by Step Solution

1. Step 1: Write the proportion equation
   455,021 : 978,730 = 978,730 : x
2. Step 2: Convert to fraction form
   455,021/978,730 = 978,730/x
3. Step 3: Cross multiply
   455,021x = 978,730 × 978,730
4. Step 4: Simplify right side
   455,021x = 957,912,412,900
5. Step 5: Solve for x
   x = 957,912,412,900/455,021
6. Step 6: Final answer
   x = 2,105,204.84