Finding the Third Proportional to 150,399 and 321,093.56

Step by Step Solution

1. Step 1: Write the proportion equation
   150,399 : 321,093.56 = 321,093.56 : x
2. Step 2: Convert to fraction form
   150,399/321,093.56 = 321,093.56/x
3. Step 3: Cross multiply
   150,399x = 321,093.56 × 321,093.56
4. Step 4: Simplify right side
   150,399x = 103,101,075,878.94
5. Step 5: Solve for x
   x = 103,101,075,878.94/150,399
6. Step 6: Final answer
   x = 685,517.03