Finding the Third Proportional to 28,691 and 43,858.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,691 : 43,858.50 = 43,858.50 : x
2. Step 2: Convert to fraction form
   28,691/43,858.50 = 43,858.50/x
3. Step 3: Cross multiply
   28,691x = 43,858.50 × 43,858.50
4. Step 4: Simplify right side
   28,691x = 1,923,568,022.25
5. Step 5: Solve for x
   x = 1,923,568,022.25/28,691
6. Step 6: Final answer
   x = 67,044.30