Finding the Third Proportional to 12,922 and 25,640

Step by Step Solution

1. Step 1: Write the proportion equation
   12,922 : 25,640 = 25,640 : x
2. Step 2: Convert to fraction form
   12,922/25,640 = 25,640/x
3. Step 3: Cross multiply
   12,922x = 25,640 × 25,640
4. Step 4: Simplify right side
   12,922x = 657,409,600
5. Step 5: Solve for x
   x = 657,409,600/12,922
6. Step 6: Final answer
   x = 50,875.22