Finding the Third Proportional to 354,612 and 531,918.50

Step by Step Solution

1. Step 1: Write the proportion equation
   354,612 : 531,918.50 = 531,918.50 : x
2. Step 2: Convert to fraction form
   354,612/531,918.50 = 531,918.50/x
3. Step 3: Cross multiply
   354,612x = 531,918.50 × 531,918.50
4. Step 4: Simplify right side
   354,612x = 282,937,290,642.25
5. Step 5: Solve for x
   x = 282,937,290,642.25/354,612
6. Step 6: Final answer
   x = 797,878.50