Finding the Third Proportional to 155,317 and 339,712.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,317 : 339,712.50 = 339,712.50 : x
2. Step 2: Convert to fraction form
   155,317/339,712.50 = 339,712.50/x
3. Step 3: Cross multiply
   155,317x = 339,712.50 × 339,712.50
4. Step 4: Simplify right side
   155,317x = 115,404,582,656.25
5. Step 5: Solve for x
   x = 115,404,582,656.25/155,317
6. Step 6: Final answer
   x = 743,026.09