Finding the Third Proportional to 10,407 and 14,866.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,407 : 14,866.50 = 14,866.50 : x
2. Step 2: Convert to fraction form
   10,407/14,866.50 = 14,866.50/x
3. Step 3: Cross multiply
   10,407x = 14,866.50 × 14,866.50
4. Step 4: Simplify right side
   10,407x = 221,012,822.25
5. Step 5: Solve for x
   x = 221,012,822.25/10,407
6. Step 6: Final answer
   x = 21,236.94