Finding the Third Proportional to 154,779 and 339,538.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,779 : 339,538.50 = 339,538.50 : x
2. Step 2: Convert to fraction form
   154,779/339,538.50 = 339,538.50/x
3. Step 3: Cross multiply
   154,779x = 339,538.50 × 339,538.50
4. Step 4: Simplify right side
   154,779x = 115,286,392,982.25
5. Step 5: Solve for x
   x = 115,286,392,982.25/154,779
6. Step 6: Final answer
   x = 744,845.19