Finding the Third Proportional to 451,844 and 978,080

Step by Step Solution

1. Step 1: Write the proportion equation
   451,844 : 978,080 = 978,080 : x
2. Step 2: Convert to fraction form
   451,844/978,080 = 978,080/x
3. Step 3: Cross multiply
   451,844x = 978,080 × 978,080
4. Step 4: Simplify right side
   451,844x = 956,640,486,400
5. Step 5: Solve for x
   x = 956,640,486,400/451,844
6. Step 6: Final answer
   x = 2,117,191.97