Finding the Third Proportional to 146,214 and 318,870

Step by Step Solution

1. Step 1: Write the proportion equation
   146,214 : 318,870 = 318,870 : x
2. Step 2: Convert to fraction form
   146,214/318,870 = 318,870/x
3. Step 3: Cross multiply
   146,214x = 318,870 × 318,870
4. Step 4: Simplify right side
   146,214x = 101,678,076,900
5. Step 5: Solve for x
   x = 101,678,076,900/146,214
6. Step 6: Final answer
   x = 695,405.89