Finding the Third Proportional to 18,456 and 43,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,456 : 43,108.50 = 43,108.50 : x
2. Step 2: Convert to fraction form
   18,456/43,108.50 = 43,108.50/x
3. Step 3: Cross multiply
   18,456x = 43,108.50 × 43,108.50
4. Step 4: Simplify right side
   18,456x = 1,858,342,772.25
5. Step 5: Solve for x
   x = 1,858,342,772.25/18,456
6. Step 6: Final answer
   x = 100,690.44