Finding the Third Proportional to 1,503,549 and 2,172,366

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503,549 : 2,172,366 = 2,172,366 : x
2. Step 2: Convert to fraction form
   1,503,549/2,172,366 = 2,172,366/x
3. Step 3: Cross multiply
   1,503,549x = 2,172,366 × 2,172,366
4. Step 4: Simplify right side
   1,503,549x = 4,719,174,037,956
5. Step 5: Solve for x
   x = 4,719,174,037,956/1,503,549
6. Step 6: Final answer
   x = 3,138,689.89