Finding the Third Proportional to 78,939.56 and 150,604.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,939.56 : 150,604.31 = 150,604.31 : x
2. Step 2: Convert to fraction form
   78,939.56/150,604.31 = 150,604.31/x
3. Step 3: Cross multiply
   78,939.56x = 150,604.31 × 150,604.31
4. Step 4: Simplify right side
   78,939.56x = 22,681,658,943.60
5. Step 5: Solve for x
   x = 22,681,658,943.60/78,939.56
6. Step 6: Final answer
   x = 287,329.42