Finding the Third Proportional to 254,362 and 404,893

Step by Step Solution

1. Step 1: Write the proportion equation
   254,362 : 404,893 = 404,893 : x
2. Step 2: Convert to fraction form
   254,362/404,893 = 404,893/x
3. Step 3: Cross multiply
   254,362x = 404,893 × 404,893
4. Step 4: Simplify right side
   254,362x = 163,938,341,449
5. Step 5: Solve for x
   x = 163,938,341,449/254,362
6. Step 6: Final answer
   x = 644,507.99