Finding the Third Proportional to 221,002.50 and 339,894

Step by Step Solution

1. Step 1: Write the proportion equation
   221,002.50 : 339,894 = 339,894 : x
2. Step 2: Convert to fraction form
   221,002.50/339,894 = 339,894/x
3. Step 3: Cross multiply
   221,002.50x = 339,894 × 339,894
4. Step 4: Simplify right side
   221,002.50x = 115,527,931,236
5. Step 5: Solve for x
   x = 115,527,931,236/221,002.50
6. Step 6: Final answer
   x = 522,744.91