Finding the Third Proportional to 39,172 and 57,118

Step by Step Solution

1. Step 1: Write the proportion equation
   39,172 : 57,118 = 57,118 : x
2. Step 2: Convert to fraction form
   39,172/57,118 = 57,118/x
3. Step 3: Cross multiply
   39,172x = 57,118 × 57,118
4. Step 4: Simplify right side
   39,172x = 3,262,465,924
5. Step 5: Solve for x
   x = 3,262,465,924/39,172
6. Step 6: Final answer
   x = 83,285.66