Finding the Third Proportional to 56,603 and 82,788

Step by Step Solution

1. Step 1: Write the proportion equation
   56,603 : 82,788 = 82,788 : x
2. Step 2: Convert to fraction form
   56,603/82,788 = 82,788/x
3. Step 3: Cross multiply
   56,603x = 82,788 × 82,788
4. Step 4: Simplify right side
   56,603x = 6,853,852,944
5. Step 5: Solve for x
   x = 6,853,852,944/56,603
6. Step 6: Final answer
   x = 121,086.39