Finding the Third Proportional to 455,021 and 978,731

Step by Step Solution

1. Step 1: Write the proportion equation
   455,021 : 978,731 = 978,731 : x
2. Step 2: Convert to fraction form
   455,021/978,731 = 978,731/x
3. Step 3: Cross multiply
   455,021x = 978,731 × 978,731
4. Step 4: Simplify right side
   455,021x = 957,914,370,361
5. Step 5: Solve for x
   x = 957,914,370,361/455,021
6. Step 6: Final answer
   x = 2,105,209.14