Finding the Third Proportional to 11,153.63 and 15,294.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,153.63 : 15,294.09 = 15,294.09 : x
2. Step 2: Convert to fraction form
   11,153.63/15,294.09 = 15,294.09/x
3. Step 3: Cross multiply
   11,153.63x = 15,294.09 × 15,294.09
4. Step 4: Simplify right side
   11,153.63x = 233,909,303.63
5. Step 5: Solve for x
   x = 233,909,303.63/11,153.63
6. Step 6: Final answer
   x = 20,971.59