Finding the Third Proportional to 218,724 and 467,778

Step by Step Solution

1. Step 1: Write the proportion equation
   218,724 : 467,778 = 467,778 : x
2. Step 2: Convert to fraction form
   218,724/467,778 = 467,778/x
3. Step 3: Cross multiply
   218,724x = 467,778 × 467,778
4. Step 4: Simplify right side
   218,724x = 218,816,257,284
5. Step 5: Solve for x
   x = 218,816,257,284/218,724
6. Step 6: Final answer
   x = 1,000,421.80