Finding the Third Proportional to 139,932 and 299,826

Step by Step Solution

1. Step 1: Write the proportion equation
   139,932 : 299,826 = 299,826 : x
2. Step 2: Convert to fraction form
   139,932/299,826 = 299,826/x
3. Step 3: Cross multiply
   139,932x = 299,826 × 299,826
4. Step 4: Simplify right side
   139,932x = 89,895,630,276
5. Step 5: Solve for x
   x = 89,895,630,276/139,932
6. Step 6: Final answer
   x = 642,423.68