Finding the Third Proportional to 393,788 and 858,846.50

Step by Step Solution

1. Step 1: Write the proportion equation
   393,788 : 858,846.50 = 858,846.50 : x
2. Step 2: Convert to fraction form
   393,788/858,846.50 = 858,846.50/x
3. Step 3: Cross multiply
   393,788x = 858,846.50 × 858,846.50
4. Step 4: Simplify right side
   393,788x = 737,617,310,562.25
5. Step 5: Solve for x
   x = 737,617,310,562.25/393,788
6. Step 6: Final answer
   x = 1,873,133.03