Finding the Third Proportional to 709,412 and 1,556,789

Step by Step Solution

1. Step 1: Write the proportion equation
   709,412 : 1,556,789 = 1,556,789 : x
2. Step 2: Convert to fraction form
   709,412/1,556,789 = 1,556,789/x
3. Step 3: Cross multiply
   709,412x = 1,556,789 × 1,556,789
4. Step 4: Simplify right side
   709,412x = 2,423,591,990,521
5. Step 5: Solve for x
   x = 2,423,591,990,521/709,412
6. Step 6: Final answer
   x = 3,416,339.15