Finding the Third Proportional to 393,948 and 573,693.75

Step by Step Solution

1. Step 1: Write the proportion equation
   393,948 : 573,693.75 = 573,693.75 : x
2. Step 2: Convert to fraction form
   393,948/573,693.75 = 573,693.75/x
3. Step 3: Cross multiply
   393,948x = 573,693.75 × 573,693.75
4. Step 4: Simplify right side
   393,948x = 329,124,518,789.06
5. Step 5: Solve for x
   x = 329,124,518,789.06/393,948
6. Step 6: Final answer
   x = 835,451.68