Finding the Third Proportional to 1,578,342 and 3,422,274

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,342 : 3,422,274 = 3,422,274 : x
2. Step 2: Convert to fraction form
   1,578,342/3,422,274 = 3,422,274/x
3. Step 3: Cross multiply
   1,578,342x = 3,422,274 × 3,422,274
4. Step 4: Simplify right side
   1,578,342x = 11,711,959,331,076
5. Step 5: Solve for x
   x = 11,711,959,331,076/1,578,342
6. Step 6: Final answer
   x = 7,420,419.23