Finding the Third Proportional to 393,301.50 and 862,419

Step by Step Solution

1. Step 1: Write the proportion equation
   393,301.50 : 862,419 = 862,419 : x
2. Step 2: Convert to fraction form
   393,301.50/862,419 = 862,419/x
3. Step 3: Cross multiply
   393,301.50x = 862,419 × 862,419
4. Step 4: Simplify right side
   393,301.50x = 743,766,531,561
5. Step 5: Solve for x
   x = 743,766,531,561/393,301.50
6. Step 6: Final answer
   x = 1,891,084.91