Finding the Third Proportional to 68,956.50 and 102,138

Step by Step Solution

1. Step 1: Write the proportion equation
   68,956.50 : 102,138 = 102,138 : x
2. Step 2: Convert to fraction form
   68,956.50/102,138 = 102,138/x
3. Step 3: Cross multiply
   68,956.50x = 102,138 × 102,138
4. Step 4: Simplify right side
   68,956.50x = 10,432,171,044
5. Step 5: Solve for x
   x = 10,432,171,044/68,956.50
6. Step 6: Final answer
   x = 151,286.26