Finding the Third Proportional to 455,015 and 978,719

Step by Step Solution

1. Step 1: Write the proportion equation
   455,015 : 978,719 = 978,719 : x
2. Step 2: Convert to fraction form
   455,015/978,719 = 978,719/x
3. Step 3: Cross multiply
   455,015x = 978,719 × 978,719
4. Step 4: Simplify right side
   455,015x = 957,890,880,961
5. Step 5: Solve for x
   x = 957,890,880,961/455,015
6. Step 6: Final answer
   x = 2,105,185.28