Finding the Third Proportional to 154,844 and 339,212.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,844 : 339,212.50 = 339,212.50 : x
2. Step 2: Convert to fraction form
   154,844/339,212.50 = 339,212.50/x
3. Step 3: Cross multiply
   154,844x = 339,212.50 × 339,212.50
4. Step 4: Simplify right side
   154,844x = 115,065,120,156.25
5. Step 5: Solve for x
   x = 115,065,120,156.25/154,844
6. Step 6: Final answer
   x = 743,103.51