Finding the Third Proportional to 282,396 and 430,215.75

Step by Step Solution

1. Step 1: Write the proportion equation
   282,396 : 430,215.75 = 430,215.75 : x
2. Step 2: Convert to fraction form
   282,396/430,215.75 = 430,215.75/x
3. Step 3: Cross multiply
   282,396x = 430,215.75 × 430,215.75
4. Step 4: Simplify right side
   282,396x = 185,085,591,548.06
5. Step 5: Solve for x
   x = 185,085,591,548.06/282,396
6. Step 6: Final answer
   x = 655,411.52