Finding the Third Proportional to 1,122,072 and 1,578,276

Step by Step Solution

1. Step 1: Write the proportion equation
   1,122,072 : 1,578,276 = 1,578,276 : x
2. Step 2: Convert to fraction form
   1,122,072/1,578,276 = 1,578,276/x
3. Step 3: Cross multiply
   1,122,072x = 1,578,276 × 1,578,276
4. Step 4: Simplify right side
   1,122,072x = 2,490,955,132,176
5. Step 5: Solve for x
   x = 2,490,955,132,176/1,122,072
6. Step 6: Final answer
   x = 2,219,960.16