Finding the Third Proportional to 342,826.50 and 738,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,826.50 : 738,136.50 = 738,136.50 : x
2. Step 2: Convert to fraction form
   342,826.50/738,136.50 = 738,136.50/x
3. Step 3: Cross multiply
   342,826.50x = 738,136.50 × 738,136.50
4. Step 4: Simplify right side
   342,826.50x = 544,845,492,632.25
5. Step 5: Solve for x
   x = 544,845,492,632.25/342,826.50
6. Step 6: Final answer
   x = 1,589,274.73