Finding the Third Proportional to 5,904.89 and 12,961.64

Step by Step Solution

1. Step 1: Write the proportion equation
   5,904.89 : 12,961.64 = 12,961.64 : x
2. Step 2: Convert to fraction form
   5,904.89/12,961.64 = 12,961.64/x
3. Step 3: Cross multiply
   5,904.89x = 12,961.64 × 12,961.64
4. Step 4: Simplify right side
   5,904.89x = 168,004,127.69
5. Step 5: Solve for x
   x = 168,004,127.69/5,904.89
6. Step 6: Final answer
   x = 28,451.69