Finding the Third Proportional to 555,138 and 1,188,947.25

Step by Step Solution

1. Step 1: Write the proportion equation
   555,138 : 1,188,947.25 = 1,188,947.25 : x
2. Step 2: Convert to fraction form
   555,138/1,188,947.25 = 1,188,947.25/x
3. Step 3: Cross multiply
   555,138x = 1,188,947.25 × 1,188,947.25
4. Step 4: Simplify right side
   555,138x = 1,413,595,563,282.56
5. Step 5: Solve for x
   x = 1,413,595,563,282.56/555,138
6. Step 6: Final answer
   x = 2,546,385.88