Finding the Third Proportional to 1,503,618 and 2,172,468

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503,618 : 2,172,468 = 2,172,468 : x
2. Step 2: Convert to fraction form
   1,503,618/2,172,468 = 2,172,468/x
3. Step 3: Cross multiply
   1,503,618x = 2,172,468 × 2,172,468
4. Step 4: Simplify right side
   1,503,618x = 4,719,617,211,024
5. Step 5: Solve for x
   x = 4,719,617,211,024/1,503,618
6. Step 6: Final answer
   x = 3,138,840.59