Finding the Third Proportional to 21,308 and 31,961

Step by Step Solution

1. Step 1: Write the proportion equation
   21,308 : 31,961 = 31,961 : x
2. Step 2: Convert to fraction form
   21,308/31,961 = 31,961/x
3. Step 3: Cross multiply
   21,308x = 31,961 × 31,961
4. Step 4: Simplify right side
   21,308x = 1,021,505,521
5. Step 5: Solve for x
   x = 1,021,505,521/21,308
6. Step 6: Final answer
   x = 47,940.00