Finding the Third Proportional to 31,297.50 and 64,782

Step by Step Solution

1. Step 1: Write the proportion equation
   31,297.50 : 64,782 = 64,782 : x
2. Step 2: Convert to fraction form
   31,297.50/64,782 = 64,782/x
3. Step 3: Cross multiply
   31,297.50x = 64,782 × 64,782
4. Step 4: Simplify right side
   31,297.50x = 4,196,707,524
5. Step 5: Solve for x
   x = 4,196,707,524/31,297.50
6. Step 6: Final answer
   x = 134,090.82