Finding the Third Proportional to 249,243 and 543,598.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,243 : 543,598.50 = 543,598.50 : x
2. Step 2: Convert to fraction form
   249,243/543,598.50 = 543,598.50/x
3. Step 3: Cross multiply
   249,243x = 543,598.50 × 543,598.50
4. Step 4: Simplify right side
   249,243x = 295,499,329,202.25
5. Step 5: Solve for x
   x = 295,499,329,202.25/249,243
6. Step 6: Final answer
   x = 1,185,587.28