Finding the Third Proportional to 31,953 and 67,211.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,953 : 67,211.25 = 67,211.25 : x
2. Step 2: Convert to fraction form
   31,953/67,211.25 = 67,211.25/x
3. Step 3: Cross multiply
   31,953x = 67,211.25 × 67,211.25
4. Step 4: Simplify right side
   31,953x = 4,517,352,126.56
5. Step 5: Solve for x
   x = 4,517,352,126.56/31,953
6. Step 6: Final answer
   x = 141,374.90