Finding the Third Proportional to 11,009.04 and 12,199.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,009.04 : 12,199.36 = 12,199.36 : x
2. Step 2: Convert to fraction form
   11,009.04/12,199.36 = 12,199.36/x
3. Step 3: Cross multiply
   11,009.04x = 12,199.36 × 12,199.36
4. Step 4: Simplify right side
   11,009.04x = 148,824,369.16
5. Step 5: Solve for x
   x = 148,824,369.16/11,009.04
6. Step 6: Final answer
   x = 13,518.38