Finding the Third Proportional to 51,039 and 76,609.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,039 : 76,609.50 = 76,609.50 : x
2. Step 2: Convert to fraction form
   51,039/76,609.50 = 76,609.50/x
3. Step 3: Cross multiply
   51,039x = 76,609.50 × 76,609.50
4. Step 4: Simplify right side
   51,039x = 5,869,015,490.25
5. Step 5: Solve for x
   x = 5,869,015,490.25/51,039
6. Step 6: Final answer
   x = 114,990.80