Finding the Third Proportional to 99,682.50 and 218,742

Step by Step Solution

1. Step 1: Write the proportion equation
   99,682.50 : 218,742 = 218,742 : x
2. Step 2: Convert to fraction form
   99,682.50/218,742 = 218,742/x
3. Step 3: Cross multiply
   99,682.50x = 218,742 × 218,742
4. Step 4: Simplify right side
   99,682.50x = 47,848,062,564
5. Step 5: Solve for x
   x = 47,848,062,564/99,682.50
6. Step 6: Final answer
   x = 480,004.64