Finding the Third Proportional to 13,722 and 28,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,722 : 28,520.50 = 28,520.50 : x
2. Step 2: Convert to fraction form
   13,722/28,520.50 = 28,520.50/x
3. Step 3: Cross multiply
   13,722x = 28,520.50 × 28,520.50
4. Step 4: Simplify right side
   13,722x = 813,418,920.25
5. Step 5: Solve for x
   x = 813,418,920.25/13,722
6. Step 6: Final answer
   x = 59,278.45