Finding the Third Proportional to 129,864 and 270,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,864 : 270,118.50 = 270,118.50 : x
2. Step 2: Convert to fraction form
   129,864/270,118.50 = 270,118.50/x
3. Step 3: Cross multiply
   129,864x = 270,118.50 × 270,118.50
4. Step 4: Simplify right side
   129,864x = 72,964,004,042.25
5. Step 5: Solve for x
   x = 72,964,004,042.25/129,864
6. Step 6: Final answer
   x = 561,849.35