Finding the Third Proportional to 15,228 and 23,139

Step by Step Solution

1. Step 1: Write the proportion equation
   15,228 : 23,139 = 23,139 : x
2. Step 2: Convert to fraction form
   15,228/23,139 = 23,139/x
3. Step 3: Cross multiply
   15,228x = 23,139 × 23,139
4. Step 4: Simplify right side
   15,228x = 535,413,321
5. Step 5: Solve for x
   x = 535,413,321/15,228
6. Step 6: Final answer
   x = 35,159.79