Finding the Third Proportional to 143,460 and 298,724

Step by Step Solution

1. Step 1: Write the proportion equation
   143,460 : 298,724 = 298,724 : x
2. Step 2: Convert to fraction form
   143,460/298,724 = 298,724/x
3. Step 3: Cross multiply
   143,460x = 298,724 × 298,724
4. Step 4: Simplify right side
   143,460x = 89,236,028,176
5. Step 5: Solve for x
   x = 89,236,028,176/143,460
6. Step 6: Final answer
   x = 622,027.24