Finding the Third Proportional to 131,430.09 and 285,003.56

Step by Step Solution

1. Step 1: Write the proportion equation
   131,430.09 : 285,003.56 = 285,003.56 : x
2. Step 2: Convert to fraction form
   131,430.09/285,003.56 = 285,003.56/x
3. Step 3: Cross multiply
   131,430.09x = 285,003.56 × 285,003.56
4. Step 4: Simplify right side
   131,430.09x = 81,227,030,637.69
5. Step 5: Solve for x
   x = 81,227,030,637.69/131,430.09
6. Step 6: Final answer
   x = 618,024.60