Finding the Third Proportional to 254,862 and 404,893.50

Step by Step Solution

1. Step 1: Write the proportion equation
   254,862 : 404,893.50 = 404,893.50 : x
2. Step 2: Convert to fraction form
   254,862/404,893.50 = 404,893.50/x
3. Step 3: Cross multiply
   254,862x = 404,893.50 × 404,893.50
4. Step 4: Simplify right side
   254,862x = 163,938,746,342.25
5. Step 5: Solve for x
   x = 163,938,746,342.25/254,862
6. Step 6: Final answer
   x = 643,245.15