Finding the Third Proportional to 55,221.75 and 85,703.06

Step by Step Solution

1. Step 1: Write the proportion equation
   55,221.75 : 85,703.06 = 85,703.06 : x
2. Step 2: Convert to fraction form
   55,221.75/85,703.06 = 85,703.06/x
3. Step 3: Cross multiply
   55,221.75x = 85,703.06 × 85,703.06
4. Step 4: Simplify right side
   55,221.75x = 7,345,014,921.88
5. Step 5: Solve for x
   x = 7,345,014,921.88/55,221.75
6. Step 6: Final answer
   x = 133,009.46