Finding the Third Proportional to 543,609 and 1,105,261.50

Step by Step Solution

1. Step 1: Write the proportion equation
   543,609 : 1,105,261.50 = 1,105,261.50 : x
2. Step 2: Convert to fraction form
   543,609/1,105,261.50 = 1,105,261.50/x
3. Step 3: Cross multiply
   543,609x = 1,105,261.50 × 1,105,261.50
4. Step 4: Simplify right side
   543,609x = 1,221,602,983,382.25
5. Step 5: Solve for x
   x = 1,221,602,983,382.25/543,609
6. Step 6: Final answer
   x = 2,247,208.90