Finding the Third Proportional to 11,261.81 and 18,140.06

Step by Step Solution

1. Step 1: Write the proportion equation
   11,261.81 : 18,140.06 = 18,140.06 : x
2. Step 2: Convert to fraction form
   11,261.81/18,140.06 = 18,140.06/x
3. Step 3: Cross multiply
   11,261.81x = 18,140.06 × 18,140.06
4. Step 4: Simplify right side
   11,261.81x = 329,061,867.50
5. Step 5: Solve for x
   x = 329,061,867.50/11,261.81
6. Step 6: Final answer
   x = 29,219.26