Finding the Third Proportional to 158,784 and 245,640

Step by Step Solution

1. Step 1: Write the proportion equation
   158,784 : 245,640 = 245,640 : x
2. Step 2: Convert to fraction form
   158,784/245,640 = 245,640/x
3. Step 3: Cross multiply
   158,784x = 245,640 × 245,640
4. Step 4: Simplify right side
   158,784x = 60,339,009,600
5. Step 5: Solve for x
   x = 60,339,009,600/158,784
6. Step 6: Final answer
   x = 380,006.86