Finding the Third Proportional to 31,380.75 and 64,933.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,380.75 : 64,933.31 = 64,933.31 : x
2. Step 2: Convert to fraction form
   31,380.75/64,933.31 = 64,933.31/x
3. Step 3: Cross multiply
   31,380.75x = 64,933.31 × 64,933.31
4. Step 4: Simplify right side
   31,380.75x = 4,216,335,072.22
5. Step 5: Solve for x
   x = 4,216,335,072.22/31,380.75
6. Step 6: Final answer
   x = 134,360.56