Finding the Third Proportional to 1,503,617 and 2,172,466

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503,617 : 2,172,466 = 2,172,466 : x
2. Step 2: Convert to fraction form
   1,503,617/2,172,466 = 2,172,466/x
3. Step 3: Cross multiply
   1,503,617x = 2,172,466 × 2,172,466
4. Step 4: Simplify right side
   1,503,617x = 4,719,608,521,156
5. Step 5: Solve for x
   x = 4,719,608,521,156/1,503,617
6. Step 6: Final answer
   x = 3,138,836.90