Finding the Third Proportional to 31,286.25 and 64,648.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,286.25 : 64,648.13 = 64,648.13 : x
2. Step 2: Convert to fraction form
   31,286.25/64,648.13 = 64,648.13/x
3. Step 3: Cross multiply
   31,286.25x = 64,648.13 × 64,648.13
4. Step 4: Simplify right side
   31,286.25x = 4,179,380,066.02
5. Step 5: Solve for x
   x = 4,179,380,066.02/31,286.25
6. Step 6: Final answer
   x = 133,585.20