Finding the Third Proportional to 280,836 and 609,300

Step by Step Solution

1. Step 1: Write the proportion equation
   280,836 : 609,300 = 609,300 : x
2. Step 2: Convert to fraction form
   280,836/609,300 = 609,300/x
3. Step 3: Cross multiply
   280,836x = 609,300 × 609,300
4. Step 4: Simplify right side
   280,836x = 371,246,490,000
5. Step 5: Solve for x
   x = 371,246,490,000/280,836
6. Step 6: Final answer
   x = 1,321,933.41