Finding the Third Proportional to 449,581 and 978,487

Step by Step Solution

1. Step 1: Write the proportion equation
   449,581 : 978,487 = 978,487 : x
2. Step 2: Convert to fraction form
   449,581/978,487 = 978,487/x
3. Step 3: Cross multiply
   449,581x = 978,487 × 978,487
4. Step 4: Simplify right side
   449,581x = 957,436,809,169
5. Step 5: Solve for x
   x = 957,436,809,169/449,581
6. Step 6: Final answer
   x = 2,129,620.27