Finding the Third Proportional to 30,810 and 65,508

Step by Step Solution

1. Step 1: Write the proportion equation
   30,810 : 65,508 = 65,508 : x
2. Step 2: Convert to fraction form
   30,810/65,508 = 65,508/x
3. Step 3: Cross multiply
   30,810x = 65,508 × 65,508
4. Step 4: Simplify right side
   30,810x = 4,291,298,064
5. Step 5: Solve for x
   x = 4,291,298,064/30,810
6. Step 6: Final answer
   x = 139,282.64