Finding the Third Proportional to 620,218 and 1,366,150

Step by Step Solution

1. Step 1: Write the proportion equation
   620,218 : 1,366,150 = 1,366,150 : x
2. Step 2: Convert to fraction form
   620,218/1,366,150 = 1,366,150/x
3. Step 3: Cross multiply
   620,218x = 1,366,150 × 1,366,150
4. Step 4: Simplify right side
   620,218x = 1,866,365,822,500
5. Step 5: Solve for x
   x = 1,866,365,822,500/620,218
6. Step 6: Final answer
   x = 3,009,209.38