Finding the Third Proportional to 1,782,420 and 3,711,720

Step by Step Solution

1. Step 1: Write the proportion equation
   1,782,420 : 3,711,720 = 3,711,720 : x
2. Step 2: Convert to fraction form
   1,782,420/3,711,720 = 3,711,720/x
3. Step 3: Cross multiply
   1,782,420x = 3,711,720 × 3,711,720
4. Step 4: Simplify right side
   1,782,420x = 13,776,865,358,400
5. Step 5: Solve for x
   x = 13,776,865,358,400/1,782,420
6. Step 6: Final answer
   x = 7,729,303.62