Finding the Third Proportional to 21,980 and 34,945

Step by Step Solution

1. Step 1: Write the proportion equation
   21,980 : 34,945 = 34,945 : x
2. Step 2: Convert to fraction form
   21,980/34,945 = 34,945/x
3. Step 3: Cross multiply
   21,980x = 34,945 × 34,945
4. Step 4: Simplify right side
   21,980x = 1,221,153,025
5. Step 5: Solve for x
   x = 1,221,153,025/21,980
6. Step 6: Final answer
   x = 55,557.46