Finding the Third Proportional to 3,731,916 and 8,139,124

Step by Step Solution

1. Step 1: Write the proportion equation
   3,731,916 : 8,139,124 = 8,139,124 : x
2. Step 2: Convert to fraction form
   3,731,916/8,139,124 = 8,139,124/x
3. Step 3: Cross multiply
   3,731,916x = 8,139,124 × 8,139,124
4. Step 4: Simplify right side
   3,731,916x = 66,245,339,487,376
5. Step 5: Solve for x
   x = 66,245,339,487,376/3,731,916
6. Step 6: Final answer
   x = 17,751,026.41