Finding the Third Proportional to 318,294 and 432,535.50

Step by Step Solution

1. Step 1: Write the proportion equation
   318,294 : 432,535.50 = 432,535.50 : x
2. Step 2: Convert to fraction form
   318,294/432,535.50 = 432,535.50/x
3. Step 3: Cross multiply
   318,294x = 432,535.50 × 432,535.50
4. Step 4: Simplify right side
   318,294x = 187,086,958,760.25
5. Step 5: Solve for x
   x = 187,086,958,760.25/318,294
6. Step 6: Final answer
   x = 587,780.35