Finding the Third Proportional to 207,540 and 404,712

Step by Step Solution

1. Step 1: Write the proportion equation
   207,540 : 404,712 = 404,712 : x
2. Step 2: Convert to fraction form
   207,540/404,712 = 404,712/x
3. Step 3: Cross multiply
   207,540x = 404,712 × 404,712
4. Step 4: Simplify right side
   207,540x = 163,791,802,944
5. Step 5: Solve for x
   x = 163,791,802,944/207,540
6. Step 6: Final answer
   x = 789,205.95