Finding the Third Proportional to 155,566 and 339,288.75

Step by Step Solution

1. Step 1: Write the proportion equation
   155,566 : 339,288.75 = 339,288.75 : x
2. Step 2: Convert to fraction form
   155,566/339,288.75 = 339,288.75/x
3. Step 3: Cross multiply
   155,566x = 339,288.75 × 339,288.75
4. Step 4: Simplify right side
   155,566x = 115,116,855,876.56
5. Step 5: Solve for x
   x = 115,116,855,876.56/155,566
6. Step 6: Final answer
   x = 739,987.25