Finding the Third Proportional to 621,450 and 959,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   621,450 : 959,648.50 = 959,648.50 : x
2. Step 2: Convert to fraction form
   621,450/959,648.50 = 959,648.50/x
3. Step 3: Cross multiply
   621,450x = 959,648.50 × 959,648.50
4. Step 4: Simplify right side
   621,450x = 920,925,243,552.25
5. Step 5: Solve for x
   x = 920,925,243,552.25/621,450
6. Step 6: Final answer
   x = 1,481,897.57