Finding the Third Proportional to 284,658 and 613,300

Step by Step Solution

1. Step 1: Write the proportion equation
   284,658 : 613,300 = 613,300 : x
2. Step 2: Convert to fraction form
   284,658/613,300 = 613,300/x
3. Step 3: Cross multiply
   284,658x = 613,300 × 613,300
4. Step 4: Simplify right side
   284,658x = 376,136,890,000
5. Step 5: Solve for x
   x = 376,136,890,000/284,658
6. Step 6: Final answer
   x = 1,321,364.20