Finding the Third Proportional to 4,698 and 10,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,698 : 10,021.50 = 10,021.50 : x
2. Step 2: Convert to fraction form
   4,698/10,021.50 = 10,021.50/x
3. Step 3: Cross multiply
   4,698x = 10,021.50 × 10,021.50
4. Step 4: Simplify right side
   4,698x = 100,430,462.25
5. Step 5: Solve for x
   x = 100,430,462.25/4,698
6. Step 6: Final answer
   x = 21,377.28