Finding the Third Proportional to 284,056 and 618,960

Step by Step Solution

1. Step 1: Write the proportion equation
   284,056 : 618,960 = 618,960 : x
2. Step 2: Convert to fraction form
   284,056/618,960 = 618,960/x
3. Step 3: Cross multiply
   284,056x = 618,960 × 618,960
4. Step 4: Simplify right side
   284,056x = 383,111,481,600
5. Step 5: Solve for x
   x = 383,111,481,600/284,056
6. Step 6: Final answer
   x = 1,348,718.15