Finding the Third Proportional to 15,430.50 and 20,860.03

Step by Step Solution

1. Step 1: Write the proportion equation
   15,430.50 : 20,860.03 = 20,860.03 : x
2. Step 2: Convert to fraction form
   15,430.50/20,860.03 = 20,860.03/x
3. Step 3: Cross multiply
   15,430.50x = 20,860.03 × 20,860.03
4. Step 4: Simplify right side
   15,430.50x = 435,140,903.75
5. Step 5: Solve for x
   x = 435,140,903.75/15,430.50
6. Step 6: Final answer
   x = 28,200.05