Finding the Third Proportional to 740,216 and 1,590,556

Step by Step Solution

1. Step 1: Write the proportion equation
   740,216 : 1,590,556 = 1,590,556 : x
2. Step 2: Convert to fraction form
   740,216/1,590,556 = 1,590,556/x
3. Step 3: Cross multiply
   740,216x = 1,590,556 × 1,590,556
4. Step 4: Simplify right side
   740,216x = 2,529,868,389,136
5. Step 5: Solve for x
   x = 2,529,868,389,136/740,216
6. Step 6: Final answer
   x = 3,417,743.45