Finding the Third Proportional to 291,357 and 383,575.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,357 : 383,575.50 = 383,575.50 : x
2. Step 2: Convert to fraction form
   291,357/383,575.50 = 383,575.50/x
3. Step 3: Cross multiply
   291,357x = 383,575.50 × 383,575.50
4. Step 4: Simplify right side
   291,357x = 147,130,164,200.25
5. Step 5: Solve for x
   x = 147,130,164,200.25/291,357
6. Step 6: Final answer
   x = 504,982.42