Finding the Third Proportional to 5,189,840 and 8,264,440

Step by Step Solution

1. Step 1: Write the proportion equation
   5,189,840 : 8,264,440 = 8,264,440 : x
2. Step 2: Convert to fraction form
   5,189,840/8,264,440 = 8,264,440/x
3. Step 3: Cross multiply
   5,189,840x = 8,264,440 × 8,264,440
4. Step 4: Simplify right side
   5,189,840x = 68,300,968,513,600
5. Step 5: Solve for x
   x = 68,300,968,513,600/5,189,840
6. Step 6: Final answer
   x = 13,160,515.26