Finding the Third Proportional to 143,157 and 323,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,157 : 323,431.50 = 323,431.50 : x
2. Step 2: Convert to fraction form
   143,157/323,431.50 = 323,431.50/x
3. Step 3: Cross multiply
   143,157x = 323,431.50 × 323,431.50
4. Step 4: Simplify right side
   143,157x = 104,607,935,192.25
5. Step 5: Solve for x
   x = 104,607,935,192.25/143,157
6. Step 6: Final answer
   x = 730,721.76