Finding the Third Proportional to 18,619.88 and 43,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,619.88 : 43,915.50 = 43,915.50 : x
2. Step 2: Convert to fraction form
   18,619.88/43,915.50 = 43,915.50/x
3. Step 3: Cross multiply
   18,619.88x = 43,915.50 × 43,915.50
4. Step 4: Simplify right side
   18,619.88x = 1,928,571,140.25
5. Step 5: Solve for x
   x = 1,928,571,140.25/18,619.88
6. Step 6: Final answer
   x = 103,575.94