Finding the Third Proportional to 57,894.75 and 86,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,894.75 : 86,980.50 = 86,980.50 : x
2. Step 2: Convert to fraction form
   57,894.75/86,980.50 = 86,980.50/x
3. Step 3: Cross multiply
   57,894.75x = 86,980.50 × 86,980.50
4. Step 4: Simplify right side
   57,894.75x = 7,565,607,380.25
5. Step 5: Solve for x
   x = 7,565,607,380.25/57,894.75
6. Step 6: Final answer
   x = 130,678.64