Finding the Third Proportional to 678,198 and 1,048,476

Step by Step Solution

1. Step 1: Write the proportion equation
   678,198 : 1,048,476 = 1,048,476 : x
2. Step 2: Convert to fraction form
   678,198/1,048,476 = 1,048,476/x
3. Step 3: Cross multiply
   678,198x = 1,048,476 × 1,048,476
4. Step 4: Simplify right side
   678,198x = 1,099,301,922,576
5. Step 5: Solve for x
   x = 1,099,301,922,576/678,198
6. Step 6: Final answer
   x = 1,620,915.90