Finding the Third Proportional to 1,862,688 and 3,969,600

Step by Step Solution

1. Step 1: Write the proportion equation
   1,862,688 : 3,969,600 = 3,969,600 : x
2. Step 2: Convert to fraction form
   1,862,688/3,969,600 = 3,969,600/x
3. Step 3: Cross multiply
   1,862,688x = 3,969,600 × 3,969,600
4. Step 4: Simplify right side
   1,862,688x = 15,757,724,160,000
5. Step 5: Solve for x
   x = 15,757,724,160,000/1,862,688
6. Step 6: Final answer
   x = 8,459,669.12