Finding the Third Proportional to 791,979 and 1,620,864

Step by Step Solution

1. Step 1: Write the proportion equation
   791,979 : 1,620,864 = 1,620,864 : x
2. Step 2: Convert to fraction form
   791,979/1,620,864 = 1,620,864/x
3. Step 3: Cross multiply
   791,979x = 1,620,864 × 1,620,864
4. Step 4: Simplify right side
   791,979x = 2,627,200,106,496
5. Step 5: Solve for x
   x = 2,627,200,106,496/791,979
6. Step 6: Final answer
   x = 3,317,259.81