Finding the Third Proportional to 187,712 and 404,992

Step by Step Solution

1. Step 1: Write the proportion equation
   187,712 : 404,992 = 404,992 : x
2. Step 2: Convert to fraction form
   187,712/404,992 = 404,992/x
3. Step 3: Cross multiply
   187,712x = 404,992 × 404,992
4. Step 4: Simplify right side
   187,712x = 164,018,520,064
5. Step 5: Solve for x
   x = 164,018,520,064/187,712
6. Step 6: Final answer
   x = 873,777.49