Finding the Third Proportional to 543,873 and 1,178,139

Step by Step Solution

1. Step 1: Write the proportion equation
   543,873 : 1,178,139 = 1,178,139 : x
2. Step 2: Convert to fraction form
   543,873/1,178,139 = 1,178,139/x
3. Step 3: Cross multiply
   543,873x = 1,178,139 × 1,178,139
4. Step 4: Simplify right side
   543,873x = 1,388,011,503,321
5. Step 5: Solve for x
   x = 1,388,011,503,321/543,873
6. Step 6: Final answer
   x = 2,552,087.53