Finding the Third Proportional to 17,620 and 23,490

Step by Step Solution

1. Step 1: Write the proportion equation
   17,620 : 23,490 = 23,490 : x
2. Step 2: Convert to fraction form
   17,620/23,490 = 23,490/x
3. Step 3: Cross multiply
   17,620x = 23,490 × 23,490
4. Step 4: Simplify right side
   17,620x = 551,780,100
5. Step 5: Solve for x
   x = 551,780,100/17,620
6. Step 6: Final answer
   x = 31,315.56