Finding the Third Proportional to 30,789 and 65,790

Step by Step Solution

1. Step 1: Write the proportion equation
   30,789 : 65,790 = 65,790 : x
2. Step 2: Convert to fraction form
   30,789/65,790 = 65,790/x
3. Step 3: Cross multiply
   30,789x = 65,790 × 65,790
4. Step 4: Simplify right side
   30,789x = 4,328,324,100
5. Step 5: Solve for x
   x = 4,328,324,100/30,789
6. Step 6: Final answer
   x = 140,580.21