Finding the Third Proportional to 311,949 and 495,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   311,949 : 495,868.50 = 495,868.50 : x
2. Step 2: Convert to fraction form
   311,949/495,868.50 = 495,868.50/x
3. Step 3: Cross multiply
   311,949x = 495,868.50 × 495,868.50
4. Step 4: Simplify right side
   311,949x = 245,885,569,292.25
5. Step 5: Solve for x
   x = 245,885,569,292.25/311,949
6. Step 6: Final answer
   x = 788,223.62