Finding the Third Proportional to 223,212 and 342,028.50

Step by Step Solution

1. Step 1: Write the proportion equation
   223,212 : 342,028.50 = 342,028.50 : x
2. Step 2: Convert to fraction form
   223,212/342,028.50 = 342,028.50/x
3. Step 3: Cross multiply
   223,212x = 342,028.50 × 342,028.50
4. Step 4: Simplify right side
   223,212x = 116,983,494,812.25
5. Step 5: Solve for x
   x = 116,983,494,812.25/223,212
6. Step 6: Final answer
   x = 524,091.42