Finding the Third Proportional to 921,117 and 1,998,789

Step by Step Solution

1. Step 1: Write the proportion equation
   921,117 : 1,998,789 = 1,998,789 : x
2. Step 2: Convert to fraction form
   921,117/1,998,789 = 1,998,789/x
3. Step 3: Cross multiply
   921,117x = 1,998,789 × 1,998,789
4. Step 4: Simplify right side
   921,117x = 3,995,157,466,521
5. Step 5: Solve for x
   x = 3,995,157,466,521/921,117
6. Step 6: Final answer
   x = 4,337,296.42