Finding the Third Proportional to 143,187.75 and 308,502

Step by Step Solution

1. Step 1: Write the proportion equation
   143,187.75 : 308,502 = 308,502 : x
2. Step 2: Convert to fraction form
   143,187.75/308,502 = 308,502/x
3. Step 3: Cross multiply
   143,187.75x = 308,502 × 308,502
4. Step 4: Simplify right side
   143,187.75x = 95,173,484,004
5. Step 5: Solve for x
   x = 95,173,484,004/143,187.75
6. Step 6: Final answer
   x = 664,676.16