Finding the Third Proportional to 78,810.50 and 171,017

Step by Step Solution

1. Step 1: Write the proportion equation
   78,810.50 : 171,017 = 171,017 : x
2. Step 2: Convert to fraction form
   78,810.50/171,017 = 171,017/x
3. Step 3: Cross multiply
   78,810.50x = 171,017 × 171,017
4. Step 4: Simplify right side
   78,810.50x = 29,246,814,289
5. Step 5: Solve for x
   x = 29,246,814,289/78,810.50
6. Step 6: Final answer
   x = 371,103.02