Finding the Third Proportional to 16,148 and 21,658

Step by Step Solution

1. Step 1: Write the proportion equation
   16,148 : 21,658 = 21,658 : x
2. Step 2: Convert to fraction form
   16,148/21,658 = 21,658/x
3. Step 3: Cross multiply
   16,148x = 21,658 × 21,658
4. Step 4: Simplify right side
   16,148x = 469,068,964
5. Step 5: Solve for x
   x = 469,068,964/16,148
6. Step 6: Final answer
   x = 29,048.12