Finding the Third Proportional to 15,368.50 and 21,765.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,368.50 : 21,765.50 = 21,765.50 : x
2. Step 2: Convert to fraction form
   15,368.50/21,765.50 = 21,765.50/x
3. Step 3: Cross multiply
   15,368.50x = 21,765.50 × 21,765.50
4. Step 4: Simplify right side
   15,368.50x = 473,736,990.25
5. Step 5: Solve for x
   x = 473,736,990.25/15,368.50
6. Step 6: Final answer
   x = 30,825.19