Finding the Third Proportional to 16,154 and 21,820

Step by Step Solution

1. Step 1: Write the proportion equation
   16,154 : 21,820 = 21,820 : x
2. Step 2: Convert to fraction form
   16,154/21,820 = 21,820/x
3. Step 3: Cross multiply
   16,154x = 21,820 × 21,820
4. Step 4: Simplify right side
   16,154x = 476,112,400
5. Step 5: Solve for x
   x = 476,112,400/16,154
6. Step 6: Final answer
   x = 29,473.34