Finding the Third Proportional to 911,816 and 1,991,464

Step by Step Solution

1. Step 1: Write the proportion equation
   911,816 : 1,991,464 = 1,991,464 : x
2. Step 2: Convert to fraction form
   911,816/1,991,464 = 1,991,464/x
3. Step 3: Cross multiply
   911,816x = 1,991,464 × 1,991,464
4. Step 4: Simplify right side
   911,816x = 3,965,928,863,296
5. Step 5: Solve for x
   x = 3,965,928,863,296/911,816
6. Step 6: Final answer
   x = 4,349,483.74