Finding the Third Proportional to 543,872 and 1,178,128

Step by Step Solution

1. Step 1: Write the proportion equation
   543,872 : 1,178,128 = 1,178,128 : x
2. Step 2: Convert to fraction form
   543,872/1,178,128 = 1,178,128/x
3. Step 3: Cross multiply
   543,872x = 1,178,128 × 1,178,128
4. Step 4: Simplify right side
   543,872x = 1,387,985,584,384
5. Step 5: Solve for x
   x = 1,387,985,584,384/543,872
6. Step 6: Final answer
   x = 2,552,044.57