Finding the Third Proportional to 51,085.69 and 76,813.31

Step by Step Solution

1. Step 1: Write the proportion equation
   51,085.69 : 76,813.31 = 76,813.31 : x
2. Step 2: Convert to fraction form
   51,085.69/76,813.31 = 76,813.31/x
3. Step 3: Cross multiply
   51,085.69x = 76,813.31 × 76,813.31
4. Step 4: Simplify right side
   51,085.69x = 5,900,284,977.22
5. Step 5: Solve for x
   x = 5,900,284,977.22/51,085.69
6. Step 6: Final answer
   x = 115,497.81