Finding the Third Proportional to 139,059.75 and 323,501.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,059.75 : 323,501.25 = 323,501.25 : x
2. Step 2: Convert to fraction form
   139,059.75/323,501.25 = 323,501.25/x
3. Step 3: Cross multiply
   139,059.75x = 323,501.25 × 323,501.25
4. Step 4: Simplify right side
   139,059.75x = 104,653,058,751.56
5. Step 5: Solve for x
   x = 104,653,058,751.56/139,059.75
6. Step 6: Final answer
   x = 752,576.20