Finding the Third Proportional to 9,679,290 and 21,065,529

Step by Step Solution

1. Step 1: Write the proportion equation
   9,679,290 : 21,065,529 = 21,065,529 : x
2. Step 2: Convert to fraction form
   9,679,290/21,065,529 = 21,065,529/x
3. Step 3: Cross multiply
   9,679,290x = 21,065,529 × 21,065,529
4. Step 4: Simplify right side
   9,679,290x = 443,756,512,049,841
5. Step 5: Solve for x
   x = 443,756,512,049,841/9,679,290
6. Step 6: Final answer
   x = 45,845,977.55