Finding the Third Proportional to 6,210 and 11,488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,210 : 11,488.50 = 11,488.50 : x
2. Step 2: Convert to fraction form
   6,210/11,488.50 = 11,488.50/x
3. Step 3: Cross multiply
   6,210x = 11,488.50 × 11,488.50
4. Step 4: Simplify right side
   6,210x = 131,985,632.25
5. Step 5: Solve for x
   x = 131,985,632.25/6,210
6. Step 6: Final answer
   x = 21,253.73