Finding the Third Proportional to 342,318 and 500,800.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,318 : 500,800.50 = 500,800.50 : x
2. Step 2: Convert to fraction form
   342,318/500,800.50 = 500,800.50/x
3. Step 3: Cross multiply
   342,318x = 500,800.50 × 500,800.50
4. Step 4: Simplify right side
   342,318x = 250,801,140,800.25
5. Step 5: Solve for x
   x = 250,801,140,800.25/342,318
6. Step 6: Final answer
   x = 732,655.43