Finding the Third Proportional to 31,524 and 64,488

Step by Step Solution

1. Step 1: Write the proportion equation
   31,524 : 64,488 = 64,488 : x
2. Step 2: Convert to fraction form
   31,524/64,488 = 64,488/x
3. Step 3: Cross multiply
   31,524x = 64,488 × 64,488
4. Step 4: Simplify right side
   31,524x = 4,158,702,144
5. Step 5: Solve for x
   x = 4,158,702,144/31,524
6. Step 6: Final answer
   x = 131,921.78