Finding the Third Proportional to 409,013 and 855,609.50

Step by Step Solution

1. Step 1: Write the proportion equation
   409,013 : 855,609.50 = 855,609.50 : x
2. Step 2: Convert to fraction form
   409,013/855,609.50 = 855,609.50/x
3. Step 3: Cross multiply
   409,013x = 855,609.50 × 855,609.50
4. Step 4: Simplify right side
   409,013x = 732,067,616,490.25
5. Step 5: Solve for x
   x = 732,067,616,490.25/409,013
6. Step 6: Final answer
   x = 1,789,839.48