Finding the Third Proportional to 721,591 and 1,557,588

Step by Step Solution

1. Step 1: Write the proportion equation
   721,591 : 1,557,588 = 1,557,588 : x
2. Step 2: Convert to fraction form
   721,591/1,557,588 = 1,557,588/x
3. Step 3: Cross multiply
   721,591x = 1,557,588 × 1,557,588
4. Step 4: Simplify right side
   721,591x = 2,426,080,377,744
5. Step 5: Solve for x
   x = 2,426,080,377,744/721,591
6. Step 6: Final answer
   x = 3,362,126.71