Finding the Third Proportional to 218,176 and 472,784

Step by Step Solution

1. Step 1: Write the proportion equation
   218,176 : 472,784 = 472,784 : x
2. Step 2: Convert to fraction form
   218,176/472,784 = 472,784/x
3. Step 3: Cross multiply
   218,176x = 472,784 × 472,784
4. Step 4: Simplify right side
   218,176x = 223,524,710,656
5. Step 5: Solve for x
   x = 223,524,710,656/218,176
6. Step 6: Final answer
   x = 1,024,515.58