Finding the Third Proportional to 543,693 and 1,279,200

Step by Step Solution

1. Step 1: Write the proportion equation
   543,693 : 1,279,200 = 1,279,200 : x
2. Step 2: Convert to fraction form
   543,693/1,279,200 = 1,279,200/x
3. Step 3: Cross multiply
   543,693x = 1,279,200 × 1,279,200
4. Step 4: Simplify right side
   543,693x = 1,636,352,640,000
5. Step 5: Solve for x
   x = 1,636,352,640,000/543,693
6. Step 6: Final answer
   x = 3,009,699.67