Finding the Third Proportional to 155,323.50 and 339,726

Step by Step Solution

1. Step 1: Write the proportion equation
   155,323.50 : 339,726 = 339,726 : x
2. Step 2: Convert to fraction form
   155,323.50/339,726 = 339,726/x
3. Step 3: Cross multiply
   155,323.50x = 339,726 × 339,726
4. Step 4: Simplify right side
   155,323.50x = 115,413,755,076
5. Step 5: Solve for x
   x = 115,413,755,076/155,323.50
6. Step 6: Final answer
   x = 743,054.05