Finding the Third Proportional to 51,807.50 and 61,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,807.50 : 61,269.50 = 61,269.50 : x
2. Step 2: Convert to fraction form
   51,807.50/61,269.50 = 61,269.50/x
3. Step 3: Cross multiply
   51,807.50x = 61,269.50 × 61,269.50
4. Step 4: Simplify right side
   51,807.50x = 3,753,951,630.25
5. Step 5: Solve for x
   x = 3,753,951,630.25/51,807.50
6. Step 6: Final answer
   x = 72,459.62