Finding the Third Proportional to 1,129,620 and 2,486,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,129,620 : 2,486,688 = 2,486,688 : x
2. Step 2: Convert to fraction form
   1,129,620/2,486,688 = 2,486,688/x
3. Step 3: Cross multiply
   1,129,620x = 2,486,688 × 2,486,688
4. Step 4: Simplify right side
   1,129,620x = 6,183,617,209,344
5. Step 5: Solve for x
   x = 6,183,617,209,344/1,129,620
6. Step 6: Final answer
   x = 5,474,068.46