Finding the Third Proportional to 11,680.88 and 18,358.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,680.88 : 18,358.31 = 18,358.31 : x
2. Step 2: Convert to fraction form
   11,680.88/18,358.31 = 18,358.31/x
3. Step 3: Cross multiply
   11,680.88x = 18,358.31 × 18,358.31
4. Step 4: Simplify right side
   11,680.88x = 337,027,637.85
5. Step 5: Solve for x
   x = 337,027,637.85/11,680.88
6. Step 6: Final answer
   x = 28,852.94