Finding the Third Proportional to 393,873 and 802,180.50

Step by Step Solution

1. Step 1: Write the proportion equation
   393,873 : 802,180.50 = 802,180.50 : x
2. Step 2: Convert to fraction form
   393,873/802,180.50 = 802,180.50/x
3. Step 3: Cross multiply
   393,873x = 802,180.50 × 802,180.50
4. Step 4: Simplify right side
   393,873x = 643,493,554,580.25
5. Step 5: Solve for x
   x = 643,493,554,580.25/393,873
6. Step 6: Final answer
   x = 1,633,758.99