Finding the Third Proportional to 3,994,478 and 8,626,312

Step by Step Solution

1. Step 1: Write the proportion equation
   3,994,478 : 8,626,312 = 8,626,312 : x
2. Step 2: Convert to fraction form
   3,994,478/8,626,312 = 8,626,312/x
3. Step 3: Cross multiply
   3,994,478x = 8,626,312 × 8,626,312
4. Step 4: Simplify right side
   3,994,478x = 74,413,258,721,344
5. Step 5: Solve for x
   x = 74,413,258,721,344/3,994,478
6. Step 6: Final answer
   x = 18,629,032.06