Finding the Third Proportional to 31,660 and 49,218

Step by Step Solution

1. Step 1: Write the proportion equation
   31,660 : 49,218 = 49,218 : x
2. Step 2: Convert to fraction form
   31,660/49,218 = 49,218/x
3. Step 3: Cross multiply
   31,660x = 49,218 × 49,218
4. Step 4: Simplify right side
   31,660x = 2,422,411,524
5. Step 5: Solve for x
   x = 2,422,411,524/31,660
6. Step 6: Final answer
   x = 76,513.31