Finding the Third Proportional to 453,996 and 636,261.75

Step by Step Solution

1. Step 1: Write the proportion equation
   453,996 : 636,261.75 = 636,261.75 : x
2. Step 2: Convert to fraction form
   453,996/636,261.75 = 636,261.75/x
3. Step 3: Cross multiply
   453,996x = 636,261.75 × 636,261.75
4. Step 4: Simplify right side
   453,996x = 404,829,014,513.06
5. Step 5: Solve for x
   x = 404,829,014,513.06/453,996
6. Step 6: Final answer
   x = 891,701.72