Finding the Third Proportional to 17,742 and 38,940

Step by Step Solution

1. Step 1: Write the proportion equation
   17,742 : 38,940 = 38,940 : x
2. Step 2: Convert to fraction form
   17,742/38,940 = 38,940/x
3. Step 3: Cross multiply
   17,742x = 38,940 × 38,940
4. Step 4: Simplify right side
   17,742x = 1,516,323,600
5. Step 5: Solve for x
   x = 1,516,323,600/17,742
6. Step 6: Final answer
   x = 85,465.20