Finding the Third Proportional to 30,722 and 64,723

Step by Step Solution

1. Step 1: Write the proportion equation
   30,722 : 64,723 = 64,723 : x
2. Step 2: Convert to fraction form
   30,722/64,723 = 64,723/x
3. Step 3: Cross multiply
   30,722x = 64,723 × 64,723
4. Step 4: Simplify right side
   30,722x = 4,189,066,729
5. Step 5: Solve for x
   x = 4,189,066,729/30,722
6. Step 6: Final answer
   x = 136,353.97