Finding the Third Proportional to 30,818.25 and 65,608.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,818.25 : 65,608.31 = 65,608.31 : x
2. Step 2: Convert to fraction form
   30,818.25/65,608.31 = 65,608.31/x
3. Step 3: Cross multiply
   30,818.25x = 65,608.31 × 65,608.31
4. Step 4: Simplify right side
   30,818.25x = 4,304,450,669.10
5. Step 5: Solve for x
   x = 4,304,450,669.10/30,818.25
6. Step 6: Final answer
   x = 139,672.13