Finding the Third Proportional to 287,215.50 and 613,527

Step by Step Solution

1. Step 1: Write the proportion equation
   287,215.50 : 613,527 = 613,527 : x
2. Step 2: Convert to fraction form
   287,215.50/613,527 = 613,527/x
3. Step 3: Cross multiply
   287,215.50x = 613,527 × 613,527
4. Step 4: Simplify right side
   287,215.50x = 376,415,379,729
5. Step 5: Solve for x
   x = 376,415,379,729/287,215.50
6. Step 6: Final answer
   x = 1,310,567.78