Finding the Third Proportional to 921,478 and 1,916,522

Step by Step Solution

1. Step 1: Write the proportion equation
   921,478 : 1,916,522 = 1,916,522 : x
2. Step 2: Convert to fraction form
   921,478/1,916,522 = 1,916,522/x
3. Step 3: Cross multiply
   921,478x = 1,916,522 × 1,916,522
4. Step 4: Simplify right side
   921,478x = 3,673,056,576,484
5. Step 5: Solve for x
   x = 3,673,056,576,484/921,478
6. Step 6: Final answer
   x = 3,986,049.13