Finding the Third Proportional to 67,139 and 146,261

Step by Step Solution

1. Step 1: Write the proportion equation
   67,139 : 146,261 = 146,261 : x
2. Step 2: Convert to fraction form
   67,139/146,261 = 146,261/x
3. Step 3: Cross multiply
   67,139x = 146,261 × 146,261
4. Step 4: Simplify right side
   67,139x = 21,392,280,121
5. Step 5: Solve for x
   x = 21,392,280,121/67,139
6. Step 6: Final answer
   x = 318,626.73