Finding the Third Proportional to 18,864 and 51,300

Step by Step Solution

1. Step 1: Write the proportion equation
   18,864 : 51,300 = 51,300 : x
2. Step 2: Convert to fraction form
   18,864/51,300 = 51,300/x
3. Step 3: Cross multiply
   18,864x = 51,300 × 51,300
4. Step 4: Simplify right side
   18,864x = 2,631,690,000
5. Step 5: Solve for x
   x = 2,631,690,000/18,864
6. Step 6: Final answer
   x = 139,508.59