Finding the Third Proportional to 1,009,770 and 2,161,387

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,770 : 2,161,387 = 2,161,387 : x
2. Step 2: Convert to fraction form
   1,009,770/2,161,387 = 2,161,387/x
3. Step 3: Cross multiply
   1,009,770x = 2,161,387 × 2,161,387
4. Step 4: Simplify right side
   1,009,770x = 4,671,593,763,769
5. Step 5: Solve for x
   x = 4,671,593,763,769/1,009,770
6. Step 6: Final answer
   x = 4,626,393.90