Finding the Third Proportional to 627,128 and 1,379,112

Step by Step Solution

1. Step 1: Write the proportion equation
   627,128 : 1,379,112 = 1,379,112 : x
2. Step 2: Convert to fraction form
   627,128/1,379,112 = 1,379,112/x
3. Step 3: Cross multiply
   627,128x = 1,379,112 × 1,379,112
4. Step 4: Simplify right side
   627,128x = 1,901,949,908,544
5. Step 5: Solve for x
   x = 1,901,949,908,544/627,128
6. Step 6: Final answer
   x = 3,032,793.80