Finding the Third Proportional to 621,604 and 1,373,900

Step by Step Solution

1. Step 1: Write the proportion equation
   621,604 : 1,373,900 = 1,373,900 : x
2. Step 2: Convert to fraction form
   621,604/1,373,900 = 1,373,900/x
3. Step 3: Cross multiply
   621,604x = 1,373,900 × 1,373,900
4. Step 4: Simplify right side
   621,604x = 1,887,601,210,000
5. Step 5: Solve for x
   x = 1,887,601,210,000/621,604
6. Step 6: Final answer
   x = 3,036,661.94