Finding the Third Proportional to 621,456 and 959,656.50

Step by Step Solution

1. Step 1: Write the proportion equation
   621,456 : 959,656.50 = 959,656.50 : x
2. Step 2: Convert to fraction form
   621,456/959,656.50 = 959,656.50/x
3. Step 3: Cross multiply
   621,456x = 959,656.50 × 959,656.50
4. Step 4: Simplify right side
   621,456x = 920,940,597,992.25
5. Step 5: Solve for x
   x = 920,940,597,992.25/621,456
6. Step 6: Final answer
   x = 1,481,907.97