Finding the Third Proportional to 725,172 and 1,555,272

Step by Step Solution

1. Step 1: Write the proportion equation
   725,172 : 1,555,272 = 1,555,272 : x
2. Step 2: Convert to fraction form
   725,172/1,555,272 = 1,555,272/x
3. Step 3: Cross multiply
   725,172x = 1,555,272 × 1,555,272
4. Step 4: Simplify right side
   725,172x = 2,418,870,993,984
5. Step 5: Solve for x
   x = 2,418,870,993,984/725,172
6. Step 6: Final answer
   x = 3,335,582.45