Finding the Third Proportional to 281,815.50 and 436,872

Step by Step Solution

1. Step 1: Write the proportion equation
   281,815.50 : 436,872 = 436,872 : x
2. Step 2: Convert to fraction form
   281,815.50/436,872 = 436,872/x
3. Step 3: Cross multiply
   281,815.50x = 436,872 × 436,872
4. Step 4: Simplify right side
   281,815.50x = 190,857,144,384
5. Step 5: Solve for x
   x = 190,857,144,384/281,815.50
6. Step 6: Final answer
   x = 677,241.47