Finding the Third Proportional to 254,364.50 and 404,898

Step by Step Solution

1. Step 1: Write the proportion equation
   254,364.50 : 404,898 = 404,898 : x
2. Step 2: Convert to fraction form
   254,364.50/404,898 = 404,898/x
3. Step 3: Cross multiply
   254,364.50x = 404,898 × 404,898
4. Step 4: Simplify right side
   254,364.50x = 163,942,390,404
5. Step 5: Solve for x
   x = 163,942,390,404/254,364.50
6. Step 6: Final answer
   x = 644,517.57