Finding the Third Proportional to 155,323 and 339,720.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,323 : 339,720.50 = 339,720.50 : x
2. Step 2: Convert to fraction form
   155,323/339,720.50 = 339,720.50/x
3. Step 3: Cross multiply
   155,323x = 339,720.50 × 339,720.50
4. Step 4: Simplify right side
   155,323x = 115,410,018,120.25
5. Step 5: Solve for x
   x = 115,410,018,120.25/155,323
6. Step 6: Final answer
   x = 743,032.38