Finding the Third Proportional to 426,234 and 636,433.50

Step by Step Solution

1. Step 1: Write the proportion equation
   426,234 : 636,433.50 = 636,433.50 : x
2. Step 2: Convert to fraction form
   426,234/636,433.50 = 636,433.50/x
3. Step 3: Cross multiply
   426,234x = 636,433.50 × 636,433.50
4. Step 4: Simplify right side
   426,234x = 405,047,599,922.25
5. Step 5: Solve for x
   x = 405,047,599,922.25/426,234
6. Step 6: Final answer
   x = 950,293.97