Finding the Third Proportional to 442,761 and 978,556

Step by Step Solution

1. Step 1: Write the proportion equation
   442,761 : 978,556 = 978,556 : x
2. Step 2: Convert to fraction form
   442,761/978,556 = 978,556/x
3. Step 3: Cross multiply
   442,761x = 978,556 × 978,556
4. Step 4: Simplify right side
   442,761x = 957,571,845,136
5. Step 5: Solve for x
   x = 957,571,845,136/442,761
6. Step 6: Final answer
   x = 2,162,728.53