Finding the Third Proportional to 17,901 and 39,123

Step by Step Solution

1. Step 1: Write the proportion equation
   17,901 : 39,123 = 39,123 : x
2. Step 2: Convert to fraction form
   17,901/39,123 = 39,123/x
3. Step 3: Cross multiply
   17,901x = 39,123 × 39,123
4. Step 4: Simplify right side
   17,901x = 1,530,609,129
5. Step 5: Solve for x
   x = 1,530,609,129/17,901
6. Step 6: Final answer
   x = 85,504.11