Finding the Third Proportional to 359,760 and 555,864

Step by Step Solution

1. Step 1: Write the proportion equation
   359,760 : 555,864 = 555,864 : x
2. Step 2: Convert to fraction form
   359,760/555,864 = 555,864/x
3. Step 3: Cross multiply
   359,760x = 555,864 × 555,864
4. Step 4: Simplify right side
   359,760x = 308,984,786,496
5. Step 5: Solve for x
   x = 308,984,786,496/359,760
6. Step 6: Final answer
   x = 858,863.65