Finding the Third Proportional to 393,663.75 and 863,598

Step by Step Solution

1. Step 1: Write the proportion equation
   393,663.75 : 863,598 = 863,598 : x
2. Step 2: Convert to fraction form
   393,663.75/863,598 = 863,598/x
3. Step 3: Cross multiply
   393,663.75x = 863,598 × 863,598
4. Step 4: Simplify right side
   393,663.75x = 745,801,505,604
5. Step 5: Solve for x
   x = 745,801,505,604/393,663.75
6. Step 6: Final answer
   x = 1,894,514.05