Finding the Third Proportional to 15,461 and 21,002

Step by Step Solution

1. Step 1: Write the proportion equation
   15,461 : 21,002 = 21,002 : x
2. Step 2: Convert to fraction form
   15,461/21,002 = 21,002/x
3. Step 3: Cross multiply
   15,461x = 21,002 × 21,002
4. Step 4: Simplify right side
   15,461x = 441,084,004
5. Step 5: Solve for x
   x = 441,084,004/15,461
6. Step 6: Final answer
   x = 28,528.81