Finding the Third Proportional to 5,453,388 and 8,455,674

Step by Step Solution

1. Step 1: Write the proportion equation
   5,453,388 : 8,455,674 = 8,455,674 : x
2. Step 2: Convert to fraction form
   5,453,388/8,455,674 = 8,455,674/x
3. Step 3: Cross multiply
   5,453,388x = 8,455,674 × 8,455,674
4. Step 4: Simplify right side
   5,453,388x = 71,498,422,794,276
5. Step 5: Solve for x
   x = 71,498,422,794,276/5,453,388
6. Step 6: Final answer
   x = 13,110,826.30