Finding the Third Proportional to 10,311 and 14,752.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,311 : 14,752.50 = 14,752.50 : x
2. Step 2: Convert to fraction form
   10,311/14,752.50 = 14,752.50/x
3. Step 3: Cross multiply
   10,311x = 14,752.50 × 14,752.50
4. Step 4: Simplify right side
   10,311x = 217,636,256.25
5. Step 5: Solve for x
   x = 217,636,256.25/10,311
6. Step 6: Final answer
   x = 21,107.19