Finding the Third Proportional to 31,509 and 60,708.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,509 : 60,708.75 = 60,708.75 : x
2. Step 2: Convert to fraction form
   31,509/60,708.75 = 60,708.75/x
3. Step 3: Cross multiply
   31,509x = 60,708.75 × 60,708.75
4. Step 4: Simplify right side
   31,509x = 3,685,552,326.56
5. Step 5: Solve for x
   x = 3,685,552,326.56/31,509
6. Step 6: Final answer
   x = 116,968.24