Finding the Third Proportional to 3,608,432 and 7,780,990

Step by Step Solution

1. Step 1: Write the proportion equation
   3,608,432 : 7,780,990 = 7,780,990 : x
2. Step 2: Convert to fraction form
   3,608,432/7,780,990 = 7,780,990/x
3. Step 3: Cross multiply
   3,608,432x = 7,780,990 × 7,780,990
4. Step 4: Simplify right side
   3,608,432x = 60,543,805,380,100
5. Step 5: Solve for x
   x = 60,543,805,380,100/3,608,432
6. Step 6: Final answer
   x = 16,778,424.92