Finding the Third Proportional to 223,112 and 339,897.50

Step by Step Solution

1. Step 1: Write the proportion equation
   223,112 : 339,897.50 = 339,897.50 : x
2. Step 2: Convert to fraction form
   223,112/339,897.50 = 339,897.50/x
3. Step 3: Cross multiply
   223,112x = 339,897.50 × 339,897.50
4. Step 4: Simplify right side
   223,112x = 115,530,310,506.25
5. Step 5: Solve for x
   x = 115,530,310,506.25/223,112
6. Step 6: Final answer
   x = 517,813.07