Finding the Third Proportional to 15,614 and 21,111

Step by Step Solution

1. Step 1: Write the proportion equation
   15,614 : 21,111 = 21,111 : x
2. Step 2: Convert to fraction form
   15,614/21,111 = 21,111/x
3. Step 3: Cross multiply
   15,614x = 21,111 × 21,111
4. Step 4: Simplify right side
   15,614x = 445,674,321
5. Step 5: Solve for x
   x = 445,674,321/15,614
6. Step 6: Final answer
   x = 28,543.25