Finding the Third Proportional to 143,456 and 313,156

Step by Step Solution

1. Step 1: Write the proportion equation
   143,456 : 313,156 = 313,156 : x
2. Step 2: Convert to fraction form
   143,456/313,156 = 313,156/x
3. Step 3: Cross multiply
   143,456x = 313,156 × 313,156
4. Step 4: Simplify right side
   143,456x = 98,066,680,336
5. Step 5: Solve for x
   x = 98,066,680,336/143,456
6. Step 6: Final answer
   x = 683,601.11