Finding the Third Proportional to 363,792 and 561,240

Step by Step Solution

1. Step 1: Write the proportion equation
   363,792 : 561,240 = 561,240 : x
2. Step 2: Convert to fraction form
   363,792/561,240 = 561,240/x
3. Step 3: Cross multiply
   363,792x = 561,240 × 561,240
4. Step 4: Simplify right side
   363,792x = 314,990,337,600
5. Step 5: Solve for x
   x = 314,990,337,600/363,792
6. Step 6: Final answer
   x = 865,852.84