Finding the Third Proportional to 13,920 and 28,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,920 : 28,522.50 = 28,522.50 : x
2. Step 2: Convert to fraction form
   13,920/28,522.50 = 28,522.50/x
3. Step 3: Cross multiply
   13,920x = 28,522.50 × 28,522.50
4. Step 4: Simplify right side
   13,920x = 813,533,006.25
5. Step 5: Solve for x
   x = 813,533,006.25/13,920
6. Step 6: Final answer
   x = 58,443.46