Finding the Third Proportional to 284,280 and 612,300

Step by Step Solution

1. Step 1: Write the proportion equation
   284,280 : 612,300 = 612,300 : x
2. Step 2: Convert to fraction form
   284,280/612,300 = 612,300/x
3. Step 3: Cross multiply
   284,280x = 612,300 × 612,300
4. Step 4: Simplify right side
   284,280x = 374,911,290,000
5. Step 5: Solve for x
   x = 374,911,290,000/284,280
6. Step 6: Final answer
   x = 1,318,809.94