Finding the Third Proportional to 15,685.50 and 33,643.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,685.50 : 33,643.50 = 33,643.50 : x
2. Step 2: Convert to fraction form
   15,685.50/33,643.50 = 33,643.50/x
3. Step 3: Cross multiply
   15,685.50x = 33,643.50 × 33,643.50
4. Step 4: Simplify right side
   15,685.50x = 1,131,885,092.25
5. Step 5: Solve for x
   x = 1,131,885,092.25/15,685.50
6. Step 6: Final answer
   x = 72,161.24