Finding the Third Proportional to 506,418 and 801,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   506,418 : 801,910.50 = 801,910.50 : x
2. Step 2: Convert to fraction form
   506,418/801,910.50 = 801,910.50/x
3. Step 3: Cross multiply
   506,418x = 801,910.50 × 801,910.50
4. Step 4: Simplify right side
   506,418x = 643,060,450,010.25
5. Step 5: Solve for x
   x = 643,060,450,010.25/506,418
6. Step 6: Final answer
   x = 1,269,821.47