Finding the Third Proportional to 11,490 and 11,490

Step by Step Solution

1. Step 1: Write the proportion equation
   11,490 : 11,490 = 11,490 : x
2. Step 2: Convert to fraction form
   11,490/11,490 = 11,490/x
3. Step 3: Cross multiply
   11,490x = 11,490 × 11,490
4. Step 4: Simplify right side
   11,490x = 132,020,100
5. Step 5: Solve for x
   x = 132,020,100/11,490
6. Step 6: Final answer
   x = 11,490