Finding the Third Proportional to 130,285.50 and 283,980

Step by Step Solution

1. Step 1: Write the proportion equation
   130,285.50 : 283,980 = 283,980 : x
2. Step 2: Convert to fraction form
   130,285.50/283,980 = 283,980/x
3. Step 3: Cross multiply
   130,285.50x = 283,980 × 283,980
4. Step 4: Simplify right side
   130,285.50x = 80,644,640,400
5. Step 5: Solve for x
   x = 80,644,640,400/130,285.50
6. Step 6: Final answer
   x = 618,984.00