Finding the Third Proportional to 9,138 and 13,955

Step by Step Solution

1. Step 1: Write the proportion equation
   9,138 : 13,955 = 13,955 : x
2. Step 2: Convert to fraction form
   9,138/13,955 = 13,955/x
3. Step 3: Cross multiply
   9,138x = 13,955 × 13,955
4. Step 4: Simplify right side
   9,138x = 194,742,025
5. Step 5: Solve for x
   x = 194,742,025/9,138
6. Step 6: Final answer
   x = 21,311.23