Finding the Third Proportional to 31,611.09 and 67,705.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,611.09 : 67,705.73 = 67,705.73 : x
2. Step 2: Convert to fraction form
   31,611.09/67,705.73 = 67,705.73/x
3. Step 3: Cross multiply
   31,611.09x = 67,705.73 × 67,705.73
4. Step 4: Simplify right side
   31,611.09x = 4,584,066,467.26
5. Step 5: Solve for x
   x = 4,584,066,467.26/31,611.09
6. Step 6: Final answer
   x = 145,014.48