Finding the Third Proportional to 1,691,688 and 3,809,220

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691,688 : 3,809,220 = 3,809,220 : x
2. Step 2: Convert to fraction form
   1,691,688/3,809,220 = 3,809,220/x
3. Step 3: Cross multiply
   1,691,688x = 3,809,220 × 3,809,220
4. Step 4: Simplify right side
   1,691,688x = 14,510,157,008,400
5. Step 5: Solve for x
   x = 14,510,157,008,400/1,691,688
6. Step 6: Final answer
   x = 8,577,324.55