Finding the Third Proportional to 3,699,681 and 8,069,919

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699,681 : 8,069,919 = 8,069,919 : x
2. Step 2: Convert to fraction form
   3,699,681/8,069,919 = 8,069,919/x
3. Step 3: Cross multiply
   3,699,681x = 8,069,919 × 8,069,919
4. Step 4: Simplify right side
   3,699,681x = 65,123,592,666,561
5. Step 5: Solve for x
   x = 65,123,592,666,561/3,699,681
6. Step 6: Final answer
   x = 17,602,488.61