Finding the Third Proportional to 17,640 and 19,476

Step by Step Solution

1. Step 1: Write the proportion equation
   17,640 : 19,476 = 19,476 : x
2. Step 2: Convert to fraction form
   17,640/19,476 = 19,476/x
3. Step 3: Cross multiply
   17,640x = 19,476 × 19,476
4. Step 4: Simplify right side
   17,640x = 379,314,576
5. Step 5: Solve for x
   x = 379,314,576/17,640
6. Step 6: Final answer
   x = 21,503.09