Finding the Third Proportional to 50,519 and 78,173

Step by Step Solution

1. Step 1: Write the proportion equation
   50,519 : 78,173 = 78,173 : x
2. Step 2: Convert to fraction form
   50,519/78,173 = 78,173/x
3. Step 3: Cross multiply
   50,519x = 78,173 × 78,173
4. Step 4: Simplify right side
   50,519x = 6,111,017,929
5. Step 5: Solve for x
   x = 6,111,017,929/50,519
6. Step 6: Final answer
   x = 120,964.74