Finding the Third Proportional to 154,861 and 342,885

Step by Step Solution

1. Step 1: Write the proportion equation
   154,861 : 342,885 = 342,885 : x
2. Step 2: Convert to fraction form
   154,861/342,885 = 342,885/x
3. Step 3: Cross multiply
   154,861x = 342,885 × 342,885
4. Step 4: Simplify right side
   154,861x = 117,570,123,225
5. Step 5: Solve for x
   x = 117,570,123,225/154,861
6. Step 6: Final answer
   x = 759,197.75