Finding the Third Proportional to 21,280 and 49,360

Step by Step Solution

1. Step 1: Write the proportion equation
   21,280 : 49,360 = 49,360 : x
2. Step 2: Convert to fraction form
   21,280/49,360 = 49,360/x
3. Step 3: Cross multiply
   21,280x = 49,360 × 49,360
4. Step 4: Simplify right side
   21,280x = 2,436,409,600
5. Step 5: Solve for x
   x = 2,436,409,600/21,280
6. Step 6: Final answer
   x = 114,492.93