Finding the Third Proportional to 49,892 and 78,987

Step by Step Solution

1. Step 1: Write the proportion equation
   49,892 : 78,987 = 78,987 : x
2. Step 2: Convert to fraction form
   49,892/78,987 = 78,987/x
3. Step 3: Cross multiply
   49,892x = 78,987 × 78,987
4. Step 4: Simplify right side
   49,892x = 6,238,946,169
5. Step 5: Solve for x
   x = 6,238,946,169/49,892
6. Step 6: Final answer
   x = 125,049.03