Finding the Third Proportional to 259,206 and 531,325.50

Step by Step Solution

1. Step 1: Write the proportion equation
   259,206 : 531,325.50 = 531,325.50 : x
2. Step 2: Convert to fraction form
   259,206/531,325.50 = 531,325.50/x
3. Step 3: Cross multiply
   259,206x = 531,325.50 × 531,325.50
4. Step 4: Simplify right side
   259,206x = 282,306,786,950.25
5. Step 5: Solve for x
   x = 282,306,786,950.25/259,206
6. Step 6: Final answer
   x = 1,089,121.34