Finding the Third Proportional to 412,881.75 and 603,390

Step by Step Solution

1. Step 1: Write the proportion equation
   412,881.75 : 603,390 = 603,390 : x
2. Step 2: Convert to fraction form
   412,881.75/603,390 = 603,390/x
3. Step 3: Cross multiply
   412,881.75x = 603,390 × 603,390
4. Step 4: Simplify right side
   412,881.75x = 364,079,492,100
5. Step 5: Solve for x
   x = 364,079,492,100/412,881.75
6. Step 6: Final answer
   x = 881,800.88