Finding the Third Proportional to 3,739,894 and 8,189,172

Step by Step Solution

1. Step 1: Write the proportion equation
   3,739,894 : 8,189,172 = 8,189,172 : x
2. Step 2: Convert to fraction form
   3,739,894/8,189,172 = 8,189,172/x
3. Step 3: Cross multiply
   3,739,894x = 8,189,172 × 8,189,172
4. Step 4: Simplify right side
   3,739,894x = 67,062,538,045,584
5. Step 5: Solve for x
   x = 67,062,538,045,584/3,739,894
6. Step 6: Final answer
   x = 17,931,668.13