Finding the Third Proportional to 31,017.94 and 66,531.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,017.94 : 66,531.38 = 66,531.38 : x
2. Step 2: Convert to fraction form
   31,017.94/66,531.38 = 66,531.38/x
3. Step 3: Cross multiply
   31,017.94x = 66,531.38 × 66,531.38
4. Step 4: Simplify right side
   31,017.94x = 4,426,423,859.39
5. Step 5: Solve for x
   x = 4,426,423,859.39/31,017.94
6. Step 6: Final answer
   x = 142,705.29