Finding the Third Proportional to 921,906 and 2,011,920

Step by Step Solution

1. Step 1: Write the proportion equation
   921,906 : 2,011,920 = 2,011,920 : x
2. Step 2: Convert to fraction form
   921,906/2,011,920 = 2,011,920/x
3. Step 3: Cross multiply
   921,906x = 2,011,920 × 2,011,920
4. Step 4: Simplify right side
   921,906x = 4,047,822,086,400
5. Step 5: Solve for x
   x = 4,047,822,086,400/921,906
6. Step 6: Final answer
   x = 4,390,710.21