Finding the Third Proportional to 393,836.50 and 802,118

Step by Step Solution

1. Step 1: Write the proportion equation
   393,836.50 : 802,118 = 802,118 : x
2. Step 2: Convert to fraction form
   393,836.50/802,118 = 802,118/x
3. Step 3: Cross multiply
   393,836.50x = 802,118 × 802,118
4. Step 4: Simplify right side
   393,836.50x = 643,393,285,924
5. Step 5: Solve for x
   x = 643,393,285,924/393,836.50
6. Step 6: Final answer
   x = 1,633,655.81