Finding the Third Proportional to 491,589 and 672,772.50

Step by Step Solution

1. Step 1: Write the proportion equation
   491,589 : 672,772.50 = 672,772.50 : x
2. Step 2: Convert to fraction form
   491,589/672,772.50 = 672,772.50/x
3. Step 3: Cross multiply
   491,589x = 672,772.50 × 672,772.50
4. Step 4: Simplify right side
   491,589x = 452,622,836,756.25
5. Step 5: Solve for x
   x = 452,622,836,756.25/491,589
6. Step 6: Final answer
   x = 920,734.27