Finding the Third Proportional to 721,600 and 1,557,608

Step by Step Solution

1. Step 1: Write the proportion equation
   721,600 : 1,557,608 = 1,557,608 : x
2. Step 2: Convert to fraction form
   721,600/1,557,608 = 1,557,608/x
3. Step 3: Cross multiply
   721,600x = 1,557,608 × 1,557,608
4. Step 4: Simplify right side
   721,600x = 2,426,142,681,664
5. Step 5: Solve for x
   x = 2,426,142,681,664/721,600
6. Step 6: Final answer
   x = 3,362,171.12