Finding the Third Proportional to 283,810 and 426,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   283,810 : 426,910.50 = 426,910.50 : x
2. Step 2: Convert to fraction form
   283,810/426,910.50 = 426,910.50/x
3. Step 3: Cross multiply
   283,810x = 426,910.50 × 426,910.50
4. Step 4: Simplify right side
   283,810x = 182,252,575,010.25
5. Step 5: Solve for x
   x = 182,252,575,010.25/283,810
6. Step 6: Final answer
   x = 642,164.04