Finding the Third Proportional to 155,226 and 339,510

Step by Step Solution

1. Step 1: Write the proportion equation
   155,226 : 339,510 = 339,510 : x
2. Step 2: Convert to fraction form
   155,226/339,510 = 339,510/x
3. Step 3: Cross multiply
   155,226x = 339,510 × 339,510
4. Step 4: Simplify right side
   155,226x = 115,267,040,100
5. Step 5: Solve for x
   x = 115,267,040,100/155,226
6. Step 6: Final answer
   x = 742,575.60