Finding the Third Proportional to 819,261 and 1,253,839.50

Step by Step Solution

1. Step 1: Write the proportion equation
   819,261 : 1,253,839.50 = 1,253,839.50 : x
2. Step 2: Convert to fraction form
   819,261/1,253,839.50 = 1,253,839.50/x
3. Step 3: Cross multiply
   819,261x = 1,253,839.50 × 1,253,839.50
4. Step 4: Simplify right side
   819,261x = 1,572,113,491,760.25
5. Step 5: Solve for x
   x = 1,572,113,491,760.25/819,261
6. Step 6: Final answer
   x = 1,918,940.96