Finding the Third Proportional to 187,459 and 404,860

Step by Step Solution

1. Step 1: Write the proportion equation
   187,459 : 404,860 = 404,860 : x
2. Step 2: Convert to fraction form
   187,459/404,860 = 404,860/x
3. Step 3: Cross multiply
   187,459x = 404,860 × 404,860
4. Step 4: Simplify right side
   187,459x = 163,911,619,600
5. Step 5: Solve for x
   x = 163,911,619,600/187,459
6. Step 6: Final answer
   x = 874,386.50