Finding the Third Proportional to 51,906.50 and 71,904.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,906.50 : 71,904.50 = 71,904.50 : x
2. Step 2: Convert to fraction form
   51,906.50/71,904.50 = 71,904.50/x
3. Step 3: Cross multiply
   51,906.50x = 71,904.50 × 71,904.50
4. Step 4: Simplify right side
   51,906.50x = 5,170,257,120.25
5. Step 5: Solve for x
   x = 5,170,257,120.25/51,906.50
6. Step 6: Final answer
   x = 99,607.12