Finding the Third Proportional to 285,582 and 620,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   285,582 : 620,401.50 = 620,401.50 : x
2. Step 2: Convert to fraction form
   285,582/620,401.50 = 620,401.50/x
3. Step 3: Cross multiply
   285,582x = 620,401.50 × 620,401.50
4. Step 4: Simplify right side
   285,582x = 384,898,021,202.25
5. Step 5: Solve for x
   x = 384,898,021,202.25/285,582
6. Step 6: Final answer
   x = 1,347,767.09