Finding the Third Proportional to 55,311 and 85,788

Step by Step Solution

1. Step 1: Write the proportion equation
   55,311 : 85,788 = 85,788 : x
2. Step 2: Convert to fraction form
   55,311/85,788 = 85,788/x
3. Step 3: Cross multiply
   55,311x = 85,788 × 85,788
4. Step 4: Simplify right side
   55,311x = 7,359,580,944
5. Step 5: Solve for x
   x = 7,359,580,944/55,311
6. Step 6: Final answer
   x = 133,058.18