Finding the Third Proportional to 543,910.50 and 1,178,218.50

Step by Step Solution

1. Step 1: Write the proportion equation
   543,910.50 : 1,178,218.50 = 1,178,218.50 : x
2. Step 2: Convert to fraction form
   543,910.50/1,178,218.50 = 1,178,218.50/x
3. Step 3: Cross multiply
   543,910.50x = 1,178,218.50 × 1,178,218.50
4. Step 4: Simplify right side
   543,910.50x = 1,388,198,833,742.25
5. Step 5: Solve for x
   x = 1,388,198,833,742.25/543,910.50
6. Step 6: Final answer
   x = 2,552,255.99