Finding the Third Proportional to 1,681,830 and 3,948,381

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681,830 : 3,948,381 = 3,948,381 : x
2. Step 2: Convert to fraction form
   1,681,830/3,948,381 = 3,948,381/x
3. Step 3: Cross multiply
   1,681,830x = 3,948,381 × 3,948,381
4. Step 4: Simplify right side
   1,681,830x = 15,589,712,521,161
5. Step 5: Solve for x
   x = 15,589,712,521,161/1,681,830
6. Step 6: Final answer
   x = 9,269,493.66