Finding the Third Proportional to 13,111 and 19,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111 : 19,662.50 = 19,662.50 : x
2. Step 2: Convert to fraction form
   13,111/19,662.50 = 19,662.50/x
3. Step 3: Cross multiply
   13,111x = 19,662.50 × 19,662.50
4. Step 4: Simplify right side
   13,111x = 386,613,906.25
5. Step 5: Solve for x
   x = 386,613,906.25/13,111
6. Step 6: Final answer
   x = 29,487.75