Finding the Third Proportional to 1,238,470 and 2,561,896

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,470 : 2,561,896 = 2,561,896 : x
2. Step 2: Convert to fraction form
   1,238,470/2,561,896 = 2,561,896/x
3. Step 3: Cross multiply
   1,238,470x = 2,561,896 × 2,561,896
4. Step 4: Simplify right side
   1,238,470x = 6,563,311,114,816
5. Step 5: Solve for x
   x = 6,563,311,114,816/1,238,470
6. Step 6: Final answer
   x = 5,299,531.77