Finding the Third Proportional to 581,761 and 853,489.50

Step by Step Solution

1. Step 1: Write the proportion equation
   581,761 : 853,489.50 = 853,489.50 : x
2. Step 2: Convert to fraction form
   581,761/853,489.50 = 853,489.50/x
3. Step 3: Cross multiply
   581,761x = 853,489.50 × 853,489.50
4. Step 4: Simplify right side
   581,761x = 728,444,326,610.25
5. Step 5: Solve for x
   x = 728,444,326,610.25/581,761
6. Step 6: Final answer
   x = 1,252,136.75