Finding the Third Proportional to 1,238,619 and 1,914,289

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,619 : 1,914,289 = 1,914,289 : x
2. Step 2: Convert to fraction form
   1,238,619/1,914,289 = 1,914,289/x
3. Step 3: Cross multiply
   1,238,619x = 1,914,289 × 1,914,289
4. Step 4: Simplify right side
   1,238,619x = 3,664,502,375,521
5. Step 5: Solve for x
   x = 3,664,502,375,521/1,238,619
6. Step 6: Final answer
   x = 2,958,538.80