Finding the Third Proportional to 5,430,408 and 8,051,685

Step by Step Solution

1. Step 1: Write the proportion equation
   5,430,408 : 8,051,685 = 8,051,685 : x
2. Step 2: Convert to fraction form
   5,430,408/8,051,685 = 8,051,685/x
3. Step 3: Cross multiply
   5,430,408x = 8,051,685 × 8,051,685
4. Step 4: Simplify right side
   5,430,408x = 64,829,631,339,225
5. Step 5: Solve for x
   x = 64,829,631,339,225/5,430,408
6. Step 6: Final answer
   x = 11,938,261.61