Finding the Third Proportional to 15,109.50 and 28,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,109.50 : 28,315.50 = 28,315.50 : x
2. Step 2: Convert to fraction form
   15,109.50/28,315.50 = 28,315.50/x
3. Step 3: Cross multiply
   15,109.50x = 28,315.50 × 28,315.50
4. Step 4: Simplify right side
   15,109.50x = 801,767,540.25
5. Step 5: Solve for x
   x = 801,767,540.25/15,109.50
6. Step 6: Final answer
   x = 53,063.80