Finding the Third Proportional to 528,825 and 805,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   528,825 : 805,630.50 = 805,630.50 : x
2. Step 2: Convert to fraction form
   528,825/805,630.50 = 805,630.50/x
3. Step 3: Cross multiply
   528,825x = 805,630.50 × 805,630.50
4. Step 4: Simplify right side
   528,825x = 649,040,502,530.25
5. Step 5: Solve for x
   x = 649,040,502,530.25/528,825
6. Step 6: Final answer
   x = 1,227,325.68