Finding the Third Proportional to 188,645 and 404,284

Step by Step Solution

1. Step 1: Write the proportion equation
   188,645 : 404,284 = 404,284 : x
2. Step 2: Convert to fraction form
   188,645/404,284 = 404,284/x
3. Step 3: Cross multiply
   188,645x = 404,284 × 404,284
4. Step 4: Simplify right side
   188,645x = 163,445,552,656
5. Step 5: Solve for x
   x = 163,445,552,656/188,645
6. Step 6: Final answer
   x = 866,418.68