Finding the Third Proportional to 709,405 and 1,556,780

Step by Step Solution

1. Step 1: Write the proportion equation
   709,405 : 1,556,780 = 1,556,780 : x
2. Step 2: Convert to fraction form
   709,405/1,556,780 = 1,556,780/x
3. Step 3: Cross multiply
   709,405x = 1,556,780 × 1,556,780
4. Step 4: Simplify right side
   709,405x = 2,423,563,968,400
5. Step 5: Solve for x
   x = 2,423,563,968,400/709,405
6. Step 6: Final answer
   x = 3,416,333.36