Finding the Third Proportional to 619,309 and 1,256,124

Step by Step Solution

1. Step 1: Write the proportion equation
   619,309 : 1,256,124 = 1,256,124 : x
2. Step 2: Convert to fraction form
   619,309/1,256,124 = 1,256,124/x
3. Step 3: Cross multiply
   619,309x = 1,256,124 × 1,256,124
4. Step 4: Simplify right side
   619,309x = 1,577,847,503,376
5. Step 5: Solve for x
   x = 1,577,847,503,376/619,309
6. Step 6: Final answer
   x = 2,547,754.84