Finding the Third Proportional to 21,658 and 47,240

Step by Step Solution

1. Step 1: Write the proportion equation
   21,658 : 47,240 = 47,240 : x
2. Step 2: Convert to fraction form
   21,658/47,240 = 47,240/x
3. Step 3: Cross multiply
   21,658x = 47,240 × 47,240
4. Step 4: Simplify right side
   21,658x = 2,231,617,600
5. Step 5: Solve for x
   x = 2,231,617,600/21,658
6. Step 6: Final answer
   x = 103,038.95