Finding the Third Proportional to 1,397,888 and 3,286,056

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,888 : 3,286,056 = 3,286,056 : x
2. Step 2: Convert to fraction form
   1,397,888/3,286,056 = 3,286,056/x
3. Step 3: Cross multiply
   1,397,888x = 3,286,056 × 3,286,056
4. Step 4: Simplify right side
   1,397,888x = 10,798,164,035,136
5. Step 5: Solve for x
   x = 10,798,164,035,136/1,397,888
6. Step 6: Final answer
   x = 7,724,627.46