Finding the Third Proportional to 155,512.50 and 339,168

Step by Step Solution

1. Step 1: Write the proportion equation
   155,512.50 : 339,168 = 339,168 : x
2. Step 2: Convert to fraction form
   155,512.50/339,168 = 339,168/x
3. Step 3: Cross multiply
   155,512.50x = 339,168 × 339,168
4. Step 4: Simplify right side
   155,512.50x = 115,034,932,224
5. Step 5: Solve for x
   x = 115,034,932,224/155,512.50
6. Step 6: Final answer
   x = 739,715.02