Finding the Third Proportional to 31,011.75 and 67,308.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,011.75 : 67,308.75 = 67,308.75 : x
2. Step 2: Convert to fraction form
   31,011.75/67,308.75 = 67,308.75/x
3. Step 3: Cross multiply
   31,011.75x = 67,308.75 × 67,308.75
4. Step 4: Simplify right side
   31,011.75x = 4,530,467,826.56
5. Step 5: Solve for x
   x = 4,530,467,826.56/31,011.75
6. Step 6: Final answer
   x = 146,088.75