Finding the Third Proportional to 1,782,578 and 3,891,808

Step by Step Solution

1. Step 1: Write the proportion equation
   1,782,578 : 3,891,808 = 3,891,808 : x
2. Step 2: Convert to fraction form
   1,782,578/3,891,808 = 3,891,808/x
3. Step 3: Cross multiply
   1,782,578x = 3,891,808 × 3,891,808
4. Step 4: Simplify right side
   1,782,578x = 15,146,169,508,864
5. Step 5: Solve for x
   x = 15,146,169,508,864/1,782,578
6. Step 6: Final answer
   x = 8,496,777.99