Finding the Third Proportional to 78,270 and 104,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,270 : 104,857.50 = 104,857.50 : x
2. Step 2: Convert to fraction form
   78,270/104,857.50 = 104,857.50/x
3. Step 3: Cross multiply
   78,270x = 104,857.50 × 104,857.50
4. Step 4: Simplify right side
   78,270x = 10,995,095,306.25
5. Step 5: Solve for x
   x = 10,995,095,306.25/78,270
6. Step 6: Final answer
   x = 140,476.50