Finding the Third Proportional to 30,242 and 64,372

Step by Step Solution

1. Step 1: Write the proportion equation
   30,242 : 64,372 = 64,372 : x
2. Step 2: Convert to fraction form
   30,242/64,372 = 64,372/x
3. Step 3: Cross multiply
   30,242x = 64,372 × 64,372
4. Step 4: Simplify right side
   30,242x = 4,143,754,384
5. Step 5: Solve for x
   x = 4,143,754,384/30,242
6. Step 6: Final answer
   x = 137,019.85