Finding the Third Proportional to 9,640.50 and 21,126

Step by Step Solution

1. Step 1: Write the proportion equation
   9,640.50 : 21,126 = 21,126 : x
2. Step 2: Convert to fraction form
   9,640.50/21,126 = 21,126/x
3. Step 3: Cross multiply
   9,640.50x = 21,126 × 21,126
4. Step 4: Simplify right side
   9,640.50x = 446,307,876
5. Step 5: Solve for x
   x = 446,307,876/9,640.50
6. Step 6: Final answer
   x = 46,295.10