Finding the Third Proportional to 31,899 and 65,391

Step by Step Solution

1. Step 1: Write the proportion equation
   31,899 : 65,391 = 65,391 : x
2. Step 2: Convert to fraction form
   31,899/65,391 = 65,391/x
3. Step 3: Cross multiply
   31,899x = 65,391 × 65,391
4. Step 4: Simplify right side
   31,899x = 4,275,982,881
5. Step 5: Solve for x
   x = 4,275,982,881/31,899
6. Step 6: Final answer
   x = 134,047.55