Finding the Third Proportional to 78,936 and 171,800

Step by Step Solution

1. Step 1: Write the proportion equation
   78,936 : 171,800 = 171,800 : x
2. Step 2: Convert to fraction form
   78,936/171,800 = 171,800/x
3. Step 3: Cross multiply
   78,936x = 171,800 × 171,800
4. Step 4: Simplify right side
   78,936x = 29,515,240,000
5. Step 5: Solve for x
   x = 29,515,240,000/78,936
6. Step 6: Final answer
   x = 373,913.55