Finding the Third Proportional to 847,422 and 1,817,478

Step by Step Solution

1. Step 1: Write the proportion equation
   847,422 : 1,817,478 = 1,817,478 : x
2. Step 2: Convert to fraction form
   847,422/1,817,478 = 1,817,478/x
3. Step 3: Cross multiply
   847,422x = 1,817,478 × 1,817,478
4. Step 4: Simplify right side
   847,422x = 3,303,226,280,484
5. Step 5: Solve for x
   x = 3,303,226,280,484/847,422
6. Step 6: Final answer
   x = 3,897,970.88