Finding the Third Proportional to 775,634 and 1,621,536

Step by Step Solution

1. Step 1: Write the proportion equation
   775,634 : 1,621,536 = 1,621,536 : x
2. Step 2: Convert to fraction form
   775,634/1,621,536 = 1,621,536/x
3. Step 3: Cross multiply
   775,634x = 1,621,536 × 1,621,536
4. Step 4: Simplify right side
   775,634x = 2,629,378,999,296
5. Step 5: Solve for x
   x = 2,629,378,999,296/775,634
6. Step 6: Final answer
   x = 3,389,973.88