Finding the Third Proportional to 1,778,490 and 3,902,642

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778,490 : 3,902,642 = 3,902,642 : x
2. Step 2: Convert to fraction form
   1,778,490/3,902,642 = 3,902,642/x
3. Step 3: Cross multiply
   1,778,490x = 3,902,642 × 3,902,642
4. Step 4: Simplify right side
   1,778,490x = 15,230,614,580,164
5. Step 5: Solve for x
   x = 15,230,614,580,164/1,778,490
6. Step 6: Final answer
   x = 8,563,789.83