Finding the Third Proportional to 3,676,391 and 8,078,460

Step by Step Solution

1. Step 1: Write the proportion equation
   3,676,391 : 8,078,460 = 8,078,460 : x
2. Step 2: Convert to fraction form
   3,676,391/8,078,460 = 8,078,460/x
3. Step 3: Cross multiply
   3,676,391x = 8,078,460 × 8,078,460
4. Step 4: Simplify right side
   3,676,391x = 65,261,515,971,600
5. Step 5: Solve for x
   x = 65,261,515,971,600/3,676,391
6. Step 6: Final answer
   x = 17,751,516.63