Finding the Third Proportional to 916,920 and 1,991,484

Step by Step Solution

1. Step 1: Write the proportion equation
   916,920 : 1,991,484 = 1,991,484 : x
2. Step 2: Convert to fraction form
   916,920/1,991,484 = 1,991,484/x
3. Step 3: Cross multiply
   916,920x = 1,991,484 × 1,991,484
4. Step 4: Simplify right side
   916,920x = 3,966,008,522,256
5. Step 5: Solve for x
   x = 3,966,008,522,256/916,920
6. Step 6: Final answer
   x = 4,325,359.38