Finding the Third Proportional to 154,843 and 339,210.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,843 : 339,210.50 = 339,210.50 : x
2. Step 2: Convert to fraction form
   154,843/339,210.50 = 339,210.50/x
3. Step 3: Cross multiply
   154,843x = 339,210.50 × 339,210.50
4. Step 4: Simplify right side
   154,843x = 115,063,763,310.25
5. Step 5: Solve for x
   x = 115,063,763,310.25/154,843
6. Step 6: Final answer
   x = 743,099.55