Finding the Third Proportional to 21,915 and 34,704

Step by Step Solution

1. Step 1: Write the proportion equation
   21,915 : 34,704 = 34,704 : x
2. Step 2: Convert to fraction form
   21,915/34,704 = 34,704/x
3. Step 3: Cross multiply
   21,915x = 34,704 × 34,704
4. Step 4: Simplify right side
   21,915x = 1,204,367,616
5. Step 5: Solve for x
   x = 1,204,367,616/21,915
6. Step 6: Final answer
   x = 54,956.31