Finding the Third Proportional to 723,820 and 1,590,404

Step by Step Solution

1. Step 1: Write the proportion equation
   723,820 : 1,590,404 = 1,590,404 : x
2. Step 2: Convert to fraction form
   723,820/1,590,404 = 1,590,404/x
3. Step 3: Cross multiply
   723,820x = 1,590,404 × 1,590,404
4. Step 4: Simplify right side
   723,820x = 2,529,384,883,216
5. Step 5: Solve for x
   x = 2,529,384,883,216/723,820
6. Step 6: Final answer
   x = 3,494,494.33