Finding the Third Proportional to 143,679 and 308,001.75

Step by Step Solution

1. Step 1: Write the proportion equation
   143,679 : 308,001.75 = 308,001.75 : x
2. Step 2: Convert to fraction form
   143,679/308,001.75 = 308,001.75/x
3. Step 3: Cross multiply
   143,679x = 308,001.75 × 308,001.75
4. Step 4: Simplify right side
   143,679x = 94,865,078,003.06
5. Step 5: Solve for x
   x = 94,865,078,003.06/143,679
6. Step 6: Final answer
   x = 660,257.09