Finding the Third Proportional to 1,578,872 and 3,472,672

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,872 : 3,472,672 = 3,472,672 : x
2. Step 2: Convert to fraction form
   1,578,872/3,472,672 = 3,472,672/x
3. Step 3: Cross multiply
   1,578,872x = 3,472,672 × 3,472,672
4. Step 4: Simplify right side
   1,578,872x = 12,059,450,819,584
5. Step 5: Solve for x
   x = 12,059,450,819,584/1,578,872
6. Step 6: Final answer
   x = 7,638,016.77