Finding the Third Proportional to 259,902 and 558,481.50

Step by Step Solution

1. Step 1: Write the proportion equation
   259,902 : 558,481.50 = 558,481.50 : x
2. Step 2: Convert to fraction form
   259,902/558,481.50 = 558,481.50/x
3. Step 3: Cross multiply
   259,902x = 558,481.50 × 558,481.50
4. Step 4: Simplify right side
   259,902x = 311,901,585,842.25
5. Step 5: Solve for x
   x = 311,901,585,842.25/259,902
6. Step 6: Final answer
   x = 1,200,073.82