Finding the Third Proportional to 1,783,381 and 3,865,478

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783,381 : 3,865,478 = 3,865,478 : x
2. Step 2: Convert to fraction form
   1,783,381/3,865,478 = 3,865,478/x
3. Step 3: Cross multiply
   1,783,381x = 3,865,478 × 3,865,478
4. Step 4: Simplify right side
   1,783,381x = 14,941,920,168,484
5. Step 5: Solve for x
   x = 14,941,920,168,484/1,783,381
6. Step 6: Final answer
   x = 8,378,422.88