Finding the Third Proportional to 2,553,420 and 3,959,164

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553,420 : 3,959,164 = 3,959,164 : x
2. Step 2: Convert to fraction form
   2,553,420/3,959,164 = 3,959,164/x
3. Step 3: Cross multiply
   2,553,420x = 3,959,164 × 3,959,164
4. Step 4: Simplify right side
   2,553,420x = 15,674,979,578,896
5. Step 5: Solve for x
   x = 15,674,979,578,896/2,553,420
6. Step 6: Final answer
   x = 6,138,817.58