Finding the Third Proportional to 188,644 and 404,282

Step by Step Solution

1. Step 1: Write the proportion equation
   188,644 : 404,282 = 404,282 : x
2. Step 2: Convert to fraction form
   188,644/404,282 = 404,282/x
3. Step 3: Cross multiply
   188,644x = 404,282 × 404,282
4. Step 4: Simplify right side
   188,644x = 163,443,935,524
5. Step 5: Solve for x
   x = 163,443,935,524/188,644
6. Step 6: Final answer
   x = 866,414.70