Finding the Third Proportional to 11,390.63 and 17,116.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,390.63 : 17,116.31 = 17,116.31 : x
2. Step 2: Convert to fraction form
   11,390.63/17,116.31 = 17,116.31/x
3. Step 3: Cross multiply
   11,390.63x = 17,116.31 × 17,116.31
4. Step 4: Simplify right side
   11,390.63x = 292,968,153.60
5. Step 5: Solve for x
   x = 292,968,153.60/11,390.63
6. Step 6: Final answer
   x = 25,720.11