Finding the Third Proportional to 79,640 and 171,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,640 : 171,086.50 = 171,086.50 : x
2. Step 2: Convert to fraction form
   79,640/171,086.50 = 171,086.50/x
3. Step 3: Cross multiply
   79,640x = 171,086.50 × 171,086.50
4. Step 4: Simplify right side
   79,640x = 29,270,590,482.25
5. Step 5: Solve for x
   x = 29,270,590,482.25/79,640
6. Step 6: Final answer
   x = 367,536.29