Finding the Third Proportional to 1,620,461 and 3,539,905

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620,461 : 3,539,905 = 3,539,905 : x
2. Step 2: Convert to fraction form
   1,620,461/3,539,905 = 3,539,905/x
3. Step 3: Cross multiply
   1,620,461x = 3,539,905 × 3,539,905
4. Step 4: Simplify right side
   1,620,461x = 12,530,927,409,025
5. Step 5: Solve for x
   x = 12,530,927,409,025/1,620,461
6. Step 6: Final answer
   x = 7,732,939.83