Finding the Third Proportional to 811,231.69 and 1,261,096.31

Step by Step Solution

1. Step 1: Write the proportion equation
   811,231.69 : 1,261,096.31 = 1,261,096.31 : x
2. Step 2: Convert to fraction form
   811,231.69/1,261,096.31 = 1,261,096.31/x
3. Step 3: Cross multiply
   811,231.69x = 1,261,096.31 × 1,261,096.31
4. Step 4: Simplify right side
   811,231.69x = 1,590,363,909,401.10
5. Step 5: Solve for x
   x = 1,590,363,909,401.10/811,231.69
6. Step 6: Final answer
   x = 1,960,431.20