Finding the Third Proportional to 31,086.28 and 67,055.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,086.28 : 67,055.34 = 67,055.34 : x
2. Step 2: Convert to fraction form
   31,086.28/67,055.34 = 67,055.34/x
3. Step 3: Cross multiply
   31,086.28x = 67,055.34 × 67,055.34
4. Step 4: Simplify right side
   31,086.28x = 4,496,419,125.43
5. Step 5: Solve for x
   x = 4,496,419,125.43/31,086.28
6. Step 6: Final answer
   x = 144,643.20