Finding the Third Proportional to 36,304.69 and 78,640.72

Step by Step Solution

1. Step 1: Write the proportion equation
   36,304.69 : 78,640.72 = 78,640.72 : x
2. Step 2: Convert to fraction form
   36,304.69/78,640.72 = 78,640.72/x
3. Step 3: Cross multiply
   36,304.69x = 78,640.72 × 78,640.72
4. Step 4: Simplify right side
   36,304.69x = 6,184,362,338.33
5. Step 5: Solve for x
   x = 6,184,362,338.33/36,304.69
6. Step 6: Final answer
   x = 170,346.10