Finding the Third Proportional to 10,385 and 22,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385 : 22,128.50 = 22,128.50 : x
2. Step 2: Convert to fraction form
   10,385/22,128.50 = 22,128.50/x
3. Step 3: Cross multiply
   10,385x = 22,128.50 × 22,128.50
4. Step 4: Simplify right side
   10,385x = 489,670,512.25
5. Step 5: Solve for x
   x = 489,670,512.25/10,385
6. Step 6: Final answer
   x = 47,151.71