Finding the Third Proportional to 143,100 and 310,783.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,100 : 310,783.50 = 310,783.50 : x
2. Step 2: Convert to fraction form
   143,100/310,783.50 = 310,783.50/x
3. Step 3: Cross multiply
   143,100x = 310,783.50 × 310,783.50
4. Step 4: Simplify right side
   143,100x = 96,586,383,872.25
5. Step 5: Solve for x
   x = 96,586,383,872.25/143,100
6. Step 6: Final answer
   x = 674,957.26