Finding the Third Proportional to 638,456 and 1,336,053

Step by Step Solution

1. Step 1: Write the proportion equation
   638,456 : 1,336,053 = 1,336,053 : x
2. Step 2: Convert to fraction form
   638,456/1,336,053 = 1,336,053/x
3. Step 3: Cross multiply
   638,456x = 1,336,053 × 1,336,053
4. Step 4: Simplify right side
   638,456x = 1,785,037,618,809
5. Step 5: Solve for x
   x = 1,785,037,618,809/638,456
6. Step 6: Final answer
   x = 2,795,866.31