Finding the Third Proportional to 138,654 and 283,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,654 : 283,879.50 = 283,879.50 : x
2. Step 2: Convert to fraction form
   138,654/283,879.50 = 283,879.50/x
3. Step 3: Cross multiply
   138,654x = 283,879.50 × 283,879.50
4. Step 4: Simplify right side
   138,654x = 80,587,570,520.25
5. Step 5: Solve for x
   x = 80,587,570,520.25/138,654
6. Step 6: Final answer
   x = 581,213.46