Finding the Third Proportional to 328,818 and 493,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,818 : 493,225.50 = 493,225.50 : x
2. Step 2: Convert to fraction form
   328,818/493,225.50 = 493,225.50/x
3. Step 3: Cross multiply
   328,818x = 493,225.50 × 493,225.50
4. Step 4: Simplify right side
   328,818x = 243,271,393,850.25
5. Step 5: Solve for x
   x = 243,271,393,850.25/328,818
6. Step 6: Final answer
   x = 739,836.00