Finding the Third Proportional to 3,663,288 and 5,385,171

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663,288 : 5,385,171 = 5,385,171 : x
2. Step 2: Convert to fraction form
   3,663,288/5,385,171 = 5,385,171/x
3. Step 3: Cross multiply
   3,663,288x = 5,385,171 × 5,385,171
4. Step 4: Simplify right side
   3,663,288x = 29,000,066,699,241
5. Step 5: Solve for x
   x = 29,000,066,699,241/3,663,288
6. Step 6: Final answer
   x = 7,916,403.71