Finding the Third Proportional to 143,652 and 314,736

Step by Step Solution

1. Step 1: Write the proportion equation
   143,652 : 314,736 = 314,736 : x
2. Step 2: Convert to fraction form
   143,652/314,736 = 314,736/x
3. Step 3: Cross multiply
   143,652x = 314,736 × 314,736
4. Step 4: Simplify right side
   143,652x = 99,058,749,696
5. Step 5: Solve for x
   x = 99,058,749,696/143,652
6. Step 6: Final answer
   x = 689,574.46