Finding the Third Proportional to 139,776 and 298,368

Step by Step Solution

1. Step 1: Write the proportion equation
   139,776 : 298,368 = 298,368 : x
2. Step 2: Convert to fraction form
   139,776/298,368 = 298,368/x
3. Step 3: Cross multiply
   139,776x = 298,368 × 298,368
4. Step 4: Simplify right side
   139,776x = 89,023,463,424
5. Step 5: Solve for x
   x = 89,023,463,424/139,776
6. Step 6: Final answer
   x = 636,900.92