Finding the Third Proportional to 416,866.50 and 853,389

Step by Step Solution

1. Step 1: Write the proportion equation
   416,866.50 : 853,389 = 853,389 : x
2. Step 2: Convert to fraction form
   416,866.50/853,389 = 853,389/x
3. Step 3: Cross multiply
   416,866.50x = 853,389 × 853,389
4. Step 4: Simplify right side
   416,866.50x = 728,272,785,321
5. Step 5: Solve for x
   x = 728,272,785,321/416,866.50
6. Step 6: Final answer
   x = 1,747,016.82