Finding the Third Proportional to 404,353.50 and 862,654.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,353.50 : 862,654.50 = 862,654.50 : x
2. Step 2: Convert to fraction form
   404,353.50/862,654.50 = 862,654.50/x
3. Step 3: Cross multiply
   404,353.50x = 862,654.50 × 862,654.50
4. Step 4: Simplify right side
   404,353.50x = 744,172,786,370.25
5. Step 5: Solve for x
   x = 744,172,786,370.25/404,353.50
6. Step 6: Final answer
   x = 1,840,401.50