Finding the Third Proportional to 31,036.50 and 66,993.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,036.50 : 66,993.75 = 66,993.75 : x
2. Step 2: Convert to fraction form
   31,036.50/66,993.75 = 66,993.75/x
3. Step 3: Cross multiply
   31,036.50x = 66,993.75 × 66,993.75
4. Step 4: Simplify right side
   31,036.50x = 4,488,162,539.06
5. Step 5: Solve for x
   x = 4,488,162,539.06/31,036.50
6. Step 6: Final answer
   x = 144,609.17