Finding the Third Proportional to 775,630 and 1,621,528

Step by Step Solution

1. Step 1: Write the proportion equation
   775,630 : 1,621,528 = 1,621,528 : x
2. Step 2: Convert to fraction form
   775,630/1,621,528 = 1,621,528/x
3. Step 3: Cross multiply
   775,630x = 1,621,528 × 1,621,528
4. Step 4: Simplify right side
   775,630x = 2,629,353,054,784
5. Step 5: Solve for x
   x = 2,629,353,054,784/775,630
6. Step 6: Final answer
   x = 3,389,957.91