Finding the Third Proportional to 78,700.50 and 166,270.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,700.50 : 166,270.50 = 166,270.50 : x
2. Step 2: Convert to fraction form
   78,700.50/166,270.50 = 166,270.50/x
3. Step 3: Cross multiply
   78,700.50x = 166,270.50 × 166,270.50
4. Step 4: Simplify right side
   78,700.50x = 27,645,879,170.25
5. Step 5: Solve for x
   x = 27,645,879,170.25/78,700.50
6. Step 6: Final answer
   x = 351,279.59