Finding the Third Proportional to 12,309 and 28,898

Step by Step Solution

1. Step 1: Write the proportion equation
   12,309 : 28,898 = 28,898 : x
2. Step 2: Convert to fraction form
   12,309/28,898 = 28,898/x
3. Step 3: Cross multiply
   12,309x = 28,898 × 28,898
4. Step 4: Simplify right side
   12,309x = 835,094,404
5. Step 5: Solve for x
   x = 835,094,404/12,309
6. Step 6: Final answer
   x = 67,844.21