Finding the Third Proportional to 1,503,603 and 2,172,447

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503,603 : 2,172,447 = 2,172,447 : x
2. Step 2: Convert to fraction form
   1,503,603/2,172,447 = 2,172,447/x
3. Step 3: Cross multiply
   1,503,603x = 2,172,447 × 2,172,447
4. Step 4: Simplify right side
   1,503,603x = 4,719,525,967,809
5. Step 5: Solve for x
   x = 4,719,525,967,809/1,503,603
6. Step 6: Final answer
   x = 3,138,811.22