Finding the Third Proportional to 1,379,472 and 2,128,252

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379,472 : 2,128,252 = 2,128,252 : x
2. Step 2: Convert to fraction form
   1,379,472/2,128,252 = 2,128,252/x
3. Step 3: Cross multiply
   1,379,472x = 2,128,252 × 2,128,252
4. Step 4: Simplify right side
   1,379,472x = 4,529,456,575,504
5. Step 5: Solve for x
   x = 4,529,456,575,504/1,379,472
6. Step 6: Final answer
   x = 3,283,471.19