Finding the Third Proportional to 101,707 and 212,708.75

Step by Step Solution

1. Step 1: Write the proportion equation
   101,707 : 212,708.75 = 212,708.75 : x
2. Step 2: Convert to fraction form
   101,707/212,708.75 = 212,708.75/x
3. Step 3: Cross multiply
   101,707x = 212,708.75 × 212,708.75
4. Step 4: Simplify right side
   101,707x = 45,245,012,326.56
5. Step 5: Solve for x
   x = 45,245,012,326.56/101,707
6. Step 6: Final answer
   x = 444,856.42