Finding the Third Proportional to 15,531.12 and 33,138.18

Step by Step Solution

1. Step 1: Write the proportion equation
   15,531.12 : 33,138.18 = 33,138.18 : x
2. Step 2: Convert to fraction form
   15,531.12/33,138.18 = 33,138.18/x
3. Step 3: Cross multiply
   15,531.12x = 33,138.18 × 33,138.18
4. Step 4: Simplify right side
   15,531.12x = 1,098,138,694.11
5. Step 5: Solve for x
   x = 1,098,138,694.11/15,531.12
6. Step 6: Final answer
   x = 70,705.71