Finding the Third Proportional to 259,416 and 558,850.50

Step by Step Solution

1. Step 1: Write the proportion equation
   259,416 : 558,850.50 = 558,850.50 : x
2. Step 2: Convert to fraction form
   259,416/558,850.50 = 558,850.50/x
3. Step 3: Cross multiply
   259,416x = 558,850.50 × 558,850.50
4. Step 4: Simplify right side
   259,416x = 312,313,881,350.25
5. Step 5: Solve for x
   x = 312,313,881,350.25/259,416
6. Step 6: Final answer
   x = 1,203,911.41