Finding the Third Proportional to 55,983.75 and 86,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,983.75 : 86,680.50 = 86,680.50 : x
2. Step 2: Convert to fraction form
   55,983.75/86,680.50 = 86,680.50/x
3. Step 3: Cross multiply
   55,983.75x = 86,680.50 × 86,680.50
4. Step 4: Simplify right side
   55,983.75x = 7,513,509,080.25
5. Step 5: Solve for x
   x = 7,513,509,080.25/55,983.75
6. Step 6: Final answer
   x = 134,208.75