Finding the Third Proportional to 31,817.50 and 71,885.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,817.50 : 71,885.75 = 71,885.75 : x
2. Step 2: Convert to fraction form
   31,817.50/71,885.75 = 71,885.75/x
3. Step 3: Cross multiply
   31,817.50x = 71,885.75 × 71,885.75
4. Step 4: Simplify right side
   31,817.50x = 5,167,561,053.06
5. Step 5: Solve for x
   x = 5,167,561,053.06/31,817.50
6. Step 6: Final answer
   x = 162,412.54