Finding the Third Proportional to 747,810 and 1,621,800

Step by Step Solution

1. Step 1: Write the proportion equation
   747,810 : 1,621,800 = 1,621,800 : x
2. Step 2: Convert to fraction form
   747,810/1,621,800 = 1,621,800/x
3. Step 3: Cross multiply
   747,810x = 1,621,800 × 1,621,800
4. Step 4: Simplify right side
   747,810x = 2,630,235,240,000
5. Step 5: Solve for x
   x = 2,630,235,240,000/747,810
6. Step 6: Final answer
   x = 3,517,250.69