Finding the Third Proportional to 608,866.50 and 978,345

Step by Step Solution

1. Step 1: Write the proportion equation
   608,866.50 : 978,345 = 978,345 : x
2. Step 2: Convert to fraction form
   608,866.50/978,345 = 978,345/x
3. Step 3: Cross multiply
   608,866.50x = 978,345 × 978,345
4. Step 4: Simplify right side
   608,866.50x = 957,158,939,025
5. Step 5: Solve for x
   x = 957,158,939,025/608,866.50
6. Step 6: Final answer
   x = 1,572,034.16