Finding the Third Proportional to 338,718 and 495,361.50

Step by Step Solution

1. Step 1: Write the proportion equation
   338,718 : 495,361.50 = 495,361.50 : x
2. Step 2: Convert to fraction form
   338,718/495,361.50 = 495,361.50/x
3. Step 3: Cross multiply
   338,718x = 495,361.50 × 495,361.50
4. Step 4: Simplify right side
   338,718x = 245,383,015,682.25
5. Step 5: Solve for x
   x = 245,383,015,682.25/338,718
6. Step 6: Final answer
   x = 724,446.34