Finding the Third Proportional to 12,912 and 28,254

Step by Step Solution

1. Step 1: Write the proportion equation
   12,912 : 28,254 = 28,254 : x
2. Step 2: Convert to fraction form
   12,912/28,254 = 28,254/x
3. Step 3: Cross multiply
   12,912x = 28,254 × 28,254
4. Step 4: Simplify right side
   12,912x = 798,288,516
5. Step 5: Solve for x
   x = 798,288,516/12,912
6. Step 6: Final answer
   x = 61,825.32