Finding the Third Proportional to 4,158 and 4,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,158 : 4,522.50 = 4,522.50 : x
2. Step 2: Convert to fraction form
   4,158/4,522.50 = 4,522.50/x
3. Step 3: Cross multiply
   4,158x = 4,522.50 × 4,522.50
4. Step 4: Simplify right side
   4,158x = 20,453,006.25
5. Step 5: Solve for x
   x = 20,453,006.25/4,158
6. Step 6: Final answer
   x = 4,918.95