Finding the Third Proportional to 10,151,408 and 21,139,329

Step by Step Solution

1. Step 1: Write the proportion equation
   10,151,408 : 21,139,329 = 21,139,329 : x
2. Step 2: Convert to fraction form
   10,151,408/21,139,329 = 21,139,329/x
3. Step 3: Cross multiply
   10,151,408x = 21,139,329 × 21,139,329
4. Step 4: Simplify right side
   10,151,408x = 446,871,230,570,241
5. Step 5: Solve for x
   x = 446,871,230,570,241/10,151,408
6. Step 6: Final answer
   x = 44,020,615.72