Finding the Third Proportional to 1,681,834 and 3,948,391

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681,834 : 3,948,391 = 3,948,391 : x
2. Step 2: Convert to fraction form
   1,681,834/3,948,391 = 3,948,391/x
3. Step 3: Cross multiply
   1,681,834x = 3,948,391 × 3,948,391
4. Step 4: Simplify right side
   1,681,834x = 15,589,791,488,881
5. Step 5: Solve for x
   x = 15,589,791,488,881/1,681,834
6. Step 6: Final answer
   x = 9,269,518.57