Finding the Third Proportional to 55,989.56 and 86,695.31

Step by Step Solution

1. Step 1: Write the proportion equation
   55,989.56 : 86,695.31 = 86,695.31 : x
2. Step 2: Convert to fraction form
   55,989.56/86,695.31 = 86,695.31/x
3. Step 3: Cross multiply
   55,989.56x = 86,695.31 × 86,695.31
4. Step 4: Simplify right side
   55,989.56x = 7,516,077,209.47
5. Step 5: Solve for x
   x = 7,516,077,209.47/55,989.56
6. Step 6: Final answer
   x = 134,240.68