Finding the Third Proportional to 318,301.50 and 432,546

Step by Step Solution

1. Step 1: Write the proportion equation
   318,301.50 : 432,546 = 432,546 : x
2. Step 2: Convert to fraction form
   318,301.50/432,546 = 432,546/x
3. Step 3: Cross multiply
   318,301.50x = 432,546 × 432,546
4. Step 4: Simplify right side
   318,301.50x = 187,096,042,116
5. Step 5: Solve for x
   x = 187,096,042,116/318,301.50
6. Step 6: Final answer
   x = 587,795.04