Finding the Third Proportional to 420,795 and 635,560.50

Step by Step Solution

1. Step 1: Write the proportion equation
   420,795 : 635,560.50 = 635,560.50 : x
2. Step 2: Convert to fraction form
   420,795/635,560.50 = 635,560.50/x
3. Step 3: Cross multiply
   420,795x = 635,560.50 × 635,560.50
4. Step 4: Simplify right side
   420,795x = 403,937,149,160.25
5. Step 5: Solve for x
   x = 403,937,149,160.25/420,795
6. Step 6: Final answer
   x = 959,938.09