Finding the Third Proportional to 57,845.39 and 89,389.83

Step by Step Solution

1. Step 1: Write the proportion equation
   57,845.39 : 89,389.83 = 89,389.83 : x
2. Step 2: Convert to fraction form
   57,845.39/89,389.83 = 89,389.83/x
3. Step 3: Cross multiply
   57,845.39x = 89,389.83 × 89,389.83
4. Step 4: Simplify right side
   57,845.39x = 7,990,541,372.22
5. Step 5: Solve for x
   x = 7,990,541,372.22/57,845.39
6. Step 6: Final answer
   x = 138,136.18