Finding the Third Proportional to 85,418 and 133,610

Step by Step Solution

1. Step 1: Write the proportion equation
   85,418 : 133,610 = 133,610 : x
2. Step 2: Convert to fraction form
   85,418/133,610 = 133,610/x
3. Step 3: Cross multiply
   85,418x = 133,610 × 133,610
4. Step 4: Simplify right side
   85,418x = 17,851,632,100
5. Step 5: Solve for x
   x = 17,851,632,100/85,418
6. Step 6: Final answer
   x = 208,991.45