Finding the Third Proportional to 13,890 and 28,294.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,890 : 28,294.50 = 28,294.50 : x
2. Step 2: Convert to fraction form
   13,890/28,294.50 = 28,294.50/x
3. Step 3: Cross multiply
   13,890x = 28,294.50 × 28,294.50
4. Step 4: Simplify right side
   13,890x = 800,578,730.25
5. Step 5: Solve for x
   x = 800,578,730.25/13,890
6. Step 6: Final answer
   x = 57,637.06