Finding the Third Proportional to 1,427,328 and 2,213,478

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427,328 : 2,213,478 = 2,213,478 : x
2. Step 2: Convert to fraction form
   1,427,328/2,213,478 = 2,213,478/x
3. Step 3: Cross multiply
   1,427,328x = 2,213,478 × 2,213,478
4. Step 4: Simplify right side
   1,427,328x = 4,899,484,856,484
5. Step 5: Solve for x
   x = 4,899,484,856,484/1,427,328
6. Step 6: Final answer
   x = 3,432,627.16