Finding the Third Proportional to 618,318 and 1,342,386

Step by Step Solution

1. Step 1: Write the proportion equation
   618,318 : 1,342,386 = 1,342,386 : x
2. Step 2: Convert to fraction form
   618,318/1,342,386 = 1,342,386/x
3. Step 3: Cross multiply
   618,318x = 1,342,386 × 1,342,386
4. Step 4: Simplify right side
   618,318x = 1,802,000,172,996
5. Step 5: Solve for x
   x = 1,802,000,172,996/618,318
6. Step 6: Final answer
   x = 2,914,358.26