Finding the Third Proportional to 751,836 and 1,621,040

Step by Step Solution

1. Step 1: Write the proportion equation
   751,836 : 1,621,040 = 1,621,040 : x
2. Step 2: Convert to fraction form
   751,836/1,621,040 = 1,621,040/x
3. Step 3: Cross multiply
   751,836x = 1,621,040 × 1,621,040
4. Step 4: Simplify right side
   751,836x = 2,627,770,681,600
5. Step 5: Solve for x
   x = 2,627,770,681,600/751,836
6. Step 6: Final answer
   x = 3,495,138.14