Finding the Third Proportional to 17,688.38 and 23,616.56

Step by Step Solution

1. Step 1: Write the proportion equation
   17,688.38 : 23,616.56 = 23,616.56 : x
2. Step 2: Convert to fraction form
   17,688.38/23,616.56 = 23,616.56/x
3. Step 3: Cross multiply
   17,688.38x = 23,616.56 × 23,616.56
4. Step 4: Simplify right side
   17,688.38x = 557,742,024.32
5. Step 5: Solve for x
   x = 557,742,024.32/17,688.38
6. Step 6: Final answer
   x = 31,531.56