Finding the Third Proportional to 620,214 and 1,366,142

Step by Step Solution

1. Step 1: Write the proportion equation
   620,214 : 1,366,142 = 1,366,142 : x
2. Step 2: Convert to fraction form
   620,214/1,366,142 = 1,366,142/x
3. Step 3: Cross multiply
   620,214x = 1,366,142 × 1,366,142
4. Step 4: Simplify right side
   620,214x = 1,866,343,964,164
5. Step 5: Solve for x
   x = 1,866,343,964,164/620,214
6. Step 6: Final answer
   x = 3,009,193.54