Finding the Third Proportional to 359,802 and 528,039

Step by Step Solution

1. Step 1: Write the proportion equation
   359,802 : 528,039 = 528,039 : x
2. Step 2: Convert to fraction form
   359,802/528,039 = 528,039/x
3. Step 3: Cross multiply
   359,802x = 528,039 × 528,039
4. Step 4: Simplify right side
   359,802x = 278,825,185,521
5. Step 5: Solve for x
   x = 278,825,185,521/359,802
6. Step 6: Final answer
   x = 774,940.62