Finding the Third Proportional to 3,542.91 and 7,636.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,542.91 : 7,636.78 = 7,636.78 : x
2. Step 2: Convert to fraction form
   3,542.91/7,636.78 = 7,636.78/x
3. Step 3: Cross multiply
   3,542.91x = 7,636.78 × 7,636.78
4. Step 4: Simplify right side
   3,542.91x = 58,320,427.86
5. Step 5: Solve for x
   x = 58,320,427.86/3,542.91
6. Step 6: Final answer
   x = 16,461.18