Finding the Third Proportional to 8,600.63 and 12,111.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,600.63 : 12,111.79 = 12,111.79 : x
2. Step 2: Convert to fraction form
   8,600.63/12,111.79 = 12,111.79/x
3. Step 3: Cross multiply
   8,600.63x = 12,111.79 × 12,111.79
4. Step 4: Simplify right side
   8,600.63x = 146,695,552.57
5. Step 5: Solve for x
   x = 146,695,552.57/8,600.63
6. Step 6: Final answer
   x = 17,056.37