Finding the Third Proportional to 3,727,658 and 8,166,778

Step by Step Solution

1. Step 1: Write the proportion equation
   3,727,658 : 8,166,778 = 8,166,778 : x
2. Step 2: Convert to fraction form
   3,727,658/8,166,778 = 8,166,778/x
3. Step 3: Cross multiply
   3,727,658x = 8,166,778 × 8,166,778
4. Step 4: Simplify right side
   3,727,658x = 66,696,262,901,284
5. Step 5: Solve for x
   x = 66,696,262,901,284/3,727,658
6. Step 6: Final answer
   x = 17,892,269.87