Finding the Third Proportional to 51,711.50 and 74,558.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,711.50 : 74,558.50 = 74,558.50 : x
2. Step 2: Convert to fraction form
   51,711.50/74,558.50 = 74,558.50/x
3. Step 3: Cross multiply
   51,711.50x = 74,558.50 × 74,558.50
4. Step 4: Simplify right side
   51,711.50x = 5,558,969,922.25
5. Step 5: Solve for x
   x = 5,558,969,922.25/51,711.50
6. Step 6: Final answer
   x = 107,499.68