Finding the Third Proportional to 39,450 and 55,489.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,450 : 55,489.50 = 55,489.50 : x
2. Step 2: Convert to fraction form
   39,450/55,489.50 = 55,489.50/x
3. Step 3: Cross multiply
   39,450x = 55,489.50 × 55,489.50
4. Step 4: Simplify right side
   39,450x = 3,079,084,610.25
5. Step 5: Solve for x
   x = 3,079,084,610.25/39,450
6. Step 6: Final answer
   x = 78,050.31