Finding the Third Proportional to 3,788,640 and 8,114,688

Step by Step Solution

1. Step 1: Write the proportion equation
   3,788,640 : 8,114,688 = 8,114,688 : x
2. Step 2: Convert to fraction form
   3,788,640/8,114,688 = 8,114,688/x
3. Step 3: Cross multiply
   3,788,640x = 8,114,688 × 8,114,688
4. Step 4: Simplify right side
   3,788,640x = 65,848,161,337,344
5. Step 5: Solve for x
   x = 65,848,161,337,344/3,788,640
6. Step 6: Final answer
   x = 17,380,421.82