Finding the Third Proportional to 155,228 and 339,514.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,228 : 339,514.50 = 339,514.50 : x
2. Step 2: Convert to fraction form
   155,228/339,514.50 = 339,514.50/x
3. Step 3: Cross multiply
   155,228x = 339,514.50 × 339,514.50
4. Step 4: Simplify right side
   155,228x = 115,270,095,710.25
5. Step 5: Solve for x
   x = 115,270,095,710.25/155,228
6. Step 6: Final answer
   x = 742,585.72