Finding the Third Proportional to 55,406 and 82,887

Step by Step Solution

1. Step 1: Write the proportion equation
   55,406 : 82,887 = 82,887 : x
2. Step 2: Convert to fraction form
   55,406/82,887 = 82,887/x
3. Step 3: Cross multiply
   55,406x = 82,887 × 82,887
4. Step 4: Simplify right side
   55,406x = 6,870,254,769
5. Step 5: Solve for x
   x = 6,870,254,769/55,406
6. Step 6: Final answer
   x = 123,998.39