Finding the Third Proportional to 1,330,388 and 2,918,318

Step by Step Solution

1. Step 1: Write the proportion equation
   1,330,388 : 2,918,318 = 2,918,318 : x
2. Step 2: Convert to fraction form
   1,330,388/2,918,318 = 2,918,318/x
3. Step 3: Cross multiply
   1,330,388x = 2,918,318 × 2,918,318
4. Step 4: Simplify right side
   1,330,388x = 8,516,579,949,124
5. Step 5: Solve for x
   x = 8,516,579,949,124/1,330,388
6. Step 6: Final answer
   x = 6,401,576.04