Finding the Third Proportional to 57,828.44 and 86,262.94

Step by Step Solution

1. Step 1: Write the proportion equation
   57,828.44 : 86,262.94 = 86,262.94 : x
2. Step 2: Convert to fraction form
   57,828.44/86,262.94 = 86,262.94/x
3. Step 3: Cross multiply
   57,828.44x = 86,262.94 × 86,262.94
4. Step 4: Simplify right side
   57,828.44x = 7,441,294,386.13
5. Step 5: Solve for x
   x = 7,441,294,386.13/57,828.44
6. Step 6: Final answer
   x = 128,678.81