Finding the Third Proportional to 4,920 and 10,150.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,920 : 10,150.50 = 10,150.50 : x
2. Step 2: Convert to fraction form
   4,920/10,150.50 = 10,150.50/x
3. Step 3: Cross multiply
   4,920x = 10,150.50 × 10,150.50
4. Step 4: Simplify right side
   4,920x = 103,032,650.25
5. Step 5: Solve for x
   x = 103,032,650.25/4,920
6. Step 6: Final answer
   x = 20,941.60