Finding the Third Proportional to 678,204 and 1,048,485

Step by Step Solution

1. Step 1: Write the proportion equation
   678,204 : 1,048,485 = 1,048,485 : x
2. Step 2: Convert to fraction form
   678,204/1,048,485 = 1,048,485/x
3. Step 3: Cross multiply
   678,204x = 1,048,485 × 1,048,485
4. Step 4: Simplify right side
   678,204x = 1,099,320,795,225
5. Step 5: Solve for x
   x = 1,099,320,795,225/678,204
6. Step 6: Final answer
   x = 1,620,929.39