Finding the Third Proportional to 281,991 and 436,918.50

Step by Step Solution

1. Step 1: Write the proportion equation
   281,991 : 436,918.50 = 436,918.50 : x
2. Step 2: Convert to fraction form
   281,991/436,918.50 = 436,918.50/x
3. Step 3: Cross multiply
   281,991x = 436,918.50 × 436,918.50
4. Step 4: Simplify right side
   281,991x = 190,897,775,642.25
5. Step 5: Solve for x
   x = 190,897,775,642.25/281,991
6. Step 6: Final answer
   x = 676,964.07