Finding the Third Proportional to 396,036 and 525,150

Step by Step Solution

1. Step 1: Write the proportion equation
   396,036 : 525,150 = 525,150 : x
2. Step 2: Convert to fraction form
   396,036/525,150 = 525,150/x
3. Step 3: Cross multiply
   396,036x = 525,150 × 525,150
4. Step 4: Simplify right side
   396,036x = 275,782,522,500
5. Step 5: Solve for x
   x = 275,782,522,500/396,036
6. Step 6: Final answer
   x = 696,357.21