Finding the Third Proportional to 37,912 and 54,408

Step by Step Solution

1. Step 1: Write the proportion equation
   37,912 : 54,408 = 54,408 : x
2. Step 2: Convert to fraction form
   37,912/54,408 = 54,408/x
3. Step 3: Cross multiply
   37,912x = 54,408 × 54,408
4. Step 4: Simplify right side
   37,912x = 2,960,230,464
5. Step 5: Solve for x
   x = 2,960,230,464/37,912
6. Step 6: Final answer
   x = 78,081.62