Finding the Third Proportional to 51,808.78 and 80,002.69

Step by Step Solution

1. Step 1: Write the proportion equation
   51,808.78 : 80,002.69 = 80,002.69 : x
2. Step 2: Convert to fraction form
   51,808.78/80,002.69 = 80,002.69/x
3. Step 3: Cross multiply
   51,808.78x = 80,002.69 × 80,002.69
4. Step 4: Simplify right side
   51,808.78x = 6,400,430,007.22
5. Step 5: Solve for x
   x = 6,400,430,007.22/51,808.78
6. Step 6: Final answer
   x = 123,539.48