Finding the Third Proportional to 17,603.72 and 39,143.53

Step by Step Solution

1. Step 1: Write the proportion equation
   17,603.72 : 39,143.53 = 39,143.53 : x
2. Step 2: Convert to fraction form
   17,603.72/39,143.53 = 39,143.53/x
3. Step 3: Cross multiply
   17,603.72x = 39,143.53 × 39,143.53
4. Step 4: Simplify right side
   17,603.72x = 1,532,216,038.72
5. Step 5: Solve for x
   x = 1,532,216,038.72/17,603.72
6. Step 6: Final answer
   x = 87,039.34