Finding the Third Proportional to 187,688 and 404,900

Step by Step Solution

1. Step 1: Write the proportion equation
   187,688 : 404,900 = 404,900 : x
2. Step 2: Convert to fraction form
   187,688/404,900 = 404,900/x
3. Step 3: Cross multiply
   187,688x = 404,900 × 404,900
4. Step 4: Simplify right side
   187,688x = 163,944,010,000
5. Step 5: Solve for x
   x = 163,944,010,000/187,688
6. Step 6: Final answer
   x = 873,492.23