Finding the Third Proportional to 616,816 and 1,427,840

Step by Step Solution

1. Step 1: Write the proportion equation
   616,816 : 1,427,840 = 1,427,840 : x
2. Step 2: Convert to fraction form
   616,816/1,427,840 = 1,427,840/x
3. Step 3: Cross multiply
   616,816x = 1,427,840 × 1,427,840
4. Step 4: Simplify right side
   616,816x = 2,038,727,065,600
5. Step 5: Solve for x
   x = 2,038,727,065,600/616,816
6. Step 6: Final answer
   x = 3,305,243.49