Finding the Third Proportional to 287,401.50 and 609,822

Step by Step Solution

1. Step 1: Write the proportion equation
   287,401.50 : 609,822 = 609,822 : x
2. Step 2: Convert to fraction form
   287,401.50/609,822 = 609,822/x
3. Step 3: Cross multiply
   287,401.50x = 609,822 × 609,822
4. Step 4: Simplify right side
   287,401.50x = 371,882,871,684
5. Step 5: Solve for x
   x = 371,882,871,684/287,401.50
6. Step 6: Final answer
   x = 1,293,948.96