Finding the Third Proportional to 1,780,822 and 3,945,800

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780,822 : 3,945,800 = 3,945,800 : x
2. Step 2: Convert to fraction form
   1,780,822/3,945,800 = 3,945,800/x
3. Step 3: Cross multiply
   1,780,822x = 3,945,800 × 3,945,800
4. Step 4: Simplify right side
   1,780,822x = 15,569,337,640,000
5. Step 5: Solve for x
   x = 15,569,337,640,000/1,780,822
6. Step 6: Final answer
   x = 8,742,781.50