Finding the Third Proportional to 3,893,458 and 8,385,912

Step by Step Solution

1. Step 1: Write the proportion equation
   3,893,458 : 8,385,912 = 8,385,912 : x
2. Step 2: Convert to fraction form
   3,893,458/8,385,912 = 8,385,912/x
3. Step 3: Cross multiply
   3,893,458x = 8,385,912 × 8,385,912
4. Step 4: Simplify right side
   3,893,458x = 70,323,520,071,744
5. Step 5: Solve for x
   x = 70,323,520,071,744/3,893,458
6. Step 6: Final answer
   x = 18,061,969.61