Finding the Third Proportional to 393,256 and 601,345.50

Step by Step Solution

1. Step 1: Write the proportion equation
   393,256 : 601,345.50 = 601,345.50 : x
2. Step 2: Convert to fraction form
   393,256/601,345.50 = 601,345.50/x
3. Step 3: Cross multiply
   393,256x = 601,345.50 × 601,345.50
4. Step 4: Simplify right side
   393,256x = 361,616,410,370.25
5. Step 5: Solve for x
   x = 361,616,410,370.25/393,256
6. Step 6: Final answer
   x = 919,544.55