Finding the Third Proportional to 608,880 and 978,365

Step by Step Solution

1. Step 1: Write the proportion equation
   608,880 : 978,365 = 978,365 : x
2. Step 2: Convert to fraction form
   608,880/978,365 = 978,365/x
3. Step 3: Cross multiply
   608,880x = 978,365 × 978,365
4. Step 4: Simplify right side
   608,880x = 957,198,073,225
5. Step 5: Solve for x
   x = 957,198,073,225/608,880
6. Step 6: Final answer
   x = 1,572,063.58