Finding the Third Proportional to 31,028.34 and 66,976.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,028.34 : 66,976.31 = 66,976.31 : x
2. Step 2: Convert to fraction form
   31,028.34/66,976.31 = 66,976.31/x
3. Step 3: Cross multiply
   31,028.34x = 66,976.31 × 66,976.31
4. Step 4: Simplify right side
   31,028.34x = 4,485,826,436.10
5. Step 5: Solve for x
   x = 4,485,826,436.10/31,028.34
6. Step 6: Final answer
   x = 144,571.89