Finding the Third Proportional to 2,906,136 and 3,989,331

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906,136 : 3,989,331 = 3,989,331 : x
2. Step 2: Convert to fraction form
   2,906,136/3,989,331 = 3,989,331/x
3. Step 3: Cross multiply
   2,906,136x = 3,989,331 × 3,989,331
4. Step 4: Simplify right side
   2,906,136x = 15,914,761,827,561
5. Step 5: Solve for x
   x = 15,914,761,827,561/2,906,136
6. Step 6: Final answer
   x = 5,476,261.89