Finding the Third Proportional to 49,863 and 76,640

Step by Step Solution

1. Step 1: Write the proportion equation
   49,863 : 76,640 = 76,640 : x
2. Step 2: Convert to fraction form
   49,863/76,640 = 76,640/x
3. Step 3: Cross multiply
   49,863x = 76,640 × 76,640
4. Step 4: Simplify right side
   49,863x = 5,873,689,600
5. Step 5: Solve for x
   x = 5,873,689,600/49,863
6. Step 6: Final answer
   x = 117,796.55