Finding the Third Proportional to 609,347.50 and 1,320,390

Step by Step Solution

1. Step 1: Write the proportion equation
   609,347.50 : 1,320,390 = 1,320,390 : x
2. Step 2: Convert to fraction form
   609,347.50/1,320,390 = 1,320,390/x
3. Step 3: Cross multiply
   609,347.50x = 1,320,390 × 1,320,390
4. Step 4: Simplify right side
   609,347.50x = 1,743,429,752,100
5. Step 5: Solve for x
   x = 1,743,429,752,100/609,347.50
6. Step 6: Final answer
   x = 2,861,142.04