Finding the Third Proportional to 11,870 and 18,453

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870 : 18,453 = 18,453 : x
2. Step 2: Convert to fraction form
   11,870/18,453 = 18,453/x
3. Step 3: Cross multiply
   11,870x = 18,453 × 18,453
4. Step 4: Simplify right side
   11,870x = 340,513,209
5. Step 5: Solve for x
   x = 340,513,209/11,870
6. Step 6: Final answer
   x = 28,686.88