Finding the Third Proportional to 31,015.69 and 67,281.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,015.69 : 67,281.75 = 67,281.75 : x
2. Step 2: Convert to fraction form
   31,015.69/67,281.75 = 67,281.75/x
3. Step 3: Cross multiply
   31,015.69x = 67,281.75 × 67,281.75
4. Step 4: Simplify right side
   31,015.69x = 4,526,833,883.06
5. Step 5: Solve for x
   x = 4,526,833,883.06/31,015.69
6. Step 6: Final answer
   x = 145,953.04