Finding the Third Proportional to 64,156 and 140,705

Step by Step Solution

1. Step 1: Write the proportion equation
   64,156 : 140,705 = 140,705 : x
2. Step 2: Convert to fraction form
   64,156/140,705 = 140,705/x
3. Step 3: Cross multiply
   64,156x = 140,705 × 140,705
4. Step 4: Simplify right side
   64,156x = 19,797,897,025
5. Step 5: Solve for x
   x = 19,797,897,025/64,156
6. Step 6: Final answer
   x = 308,589.95