Finding the Third Proportional to 190,989 and 404,745

Step by Step Solution

1. Step 1: Write the proportion equation
   190,989 : 404,745 = 404,745 : x
2. Step 2: Convert to fraction form
   190,989/404,745 = 404,745/x
3. Step 3: Cross multiply
   190,989x = 404,745 × 404,745
4. Step 4: Simplify right side
   190,989x = 163,818,515,025
5. Step 5: Solve for x
   x = 163,818,515,025/190,989
6. Step 6: Final answer
   x = 857,737.96