Finding the Third Proportional to 919,910 and 1,289,074

Step by Step Solution

1. Step 1: Write the proportion equation
   919,910 : 1,289,074 = 1,289,074 : x
2. Step 2: Convert to fraction form
   919,910/1,289,074 = 1,289,074/x
3. Step 3: Cross multiply
   919,910x = 1,289,074 × 1,289,074
4. Step 4: Simplify right side
   919,910x = 1,661,711,777,476
5. Step 5: Solve for x
   x = 1,661,711,777,476/919,910
6. Step 6: Final answer
   x = 1,806,385.17