Finding the Third Proportional to 99,174 and 218,004

Step by Step Solution

1. Step 1: Write the proportion equation
   99,174 : 218,004 = 218,004 : x
2. Step 2: Convert to fraction form
   99,174/218,004 = 218,004/x
3. Step 3: Cross multiply
   99,174x = 218,004 × 218,004
4. Step 4: Simplify right side
   99,174x = 47,525,744,016
5. Step 5: Solve for x
   x = 47,525,744,016/99,174
6. Step 6: Final answer
   x = 479,215.76