Finding the Third Proportional to 57,469.50 and 89,697.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,469.50 : 89,697.75 = 89,697.75 : x
2. Step 2: Convert to fraction form
   57,469.50/89,697.75 = 89,697.75/x
3. Step 3: Cross multiply
   57,469.50x = 89,697.75 × 89,697.75
4. Step 4: Simplify right side
   57,469.50x = 8,045,686,355.06
5. Step 5: Solve for x
   x = 8,045,686,355.06/57,469.50
6. Step 6: Final answer
   x = 139,999.24