Finding the Third Proportional to 616,642 and 1,338,108

Step by Step Solution

1. Step 1: Write the proportion equation
   616,642 : 1,338,108 = 1,338,108 : x
2. Step 2: Convert to fraction form
   616,642/1,338,108 = 1,338,108/x
3. Step 3: Cross multiply
   616,642x = 1,338,108 × 1,338,108
4. Step 4: Simplify right side
   616,642x = 1,790,533,019,664
5. Step 5: Solve for x
   x = 1,790,533,019,664/616,642
6. Step 6: Final answer
   x = 2,903,683.21