Finding the Third Proportional to 342,817.50 and 738,318

Step by Step Solution

1. Step 1: Write the proportion equation
   342,817.50 : 738,318 = 738,318 : x
2. Step 2: Convert to fraction form
   342,817.50/738,318 = 738,318/x
3. Step 3: Cross multiply
   342,817.50x = 738,318 × 738,318
4. Step 4: Simplify right side
   342,817.50x = 545,113,469,124
5. Step 5: Solve for x
   x = 545,113,469,124/342,817.50
6. Step 6: Final answer
   x = 1,590,098.14