Finding the Third Proportional to 40,918.50 and 55,539

Step by Step Solution

1. Step 1: Write the proportion equation
   40,918.50 : 55,539 = 55,539 : x
2. Step 2: Convert to fraction form
   40,918.50/55,539 = 55,539/x
3. Step 3: Cross multiply
   40,918.50x = 55,539 × 55,539
4. Step 4: Simplify right side
   40,918.50x = 3,084,580,521
5. Step 5: Solve for x
   x = 3,084,580,521/40,918.50
6. Step 6: Final answer
   x = 75,383.52