Finding the Third Proportional to 721,142 and 1,538,804

Step by Step Solution

1. Step 1: Write the proportion equation
   721,142 : 1,538,804 = 1,538,804 : x
2. Step 2: Convert to fraction form
   721,142/1,538,804 = 1,538,804/x
3. Step 3: Cross multiply
   721,142x = 1,538,804 × 1,538,804
4. Step 4: Simplify right side
   721,142x = 2,367,917,750,416
5. Step 5: Solve for x
   x = 2,367,917,750,416/721,142
6. Step 6: Final answer
   x = 3,283,566.55