Finding the Third Proportional to 345,259.50 and 738,492

Step by Step Solution

1. Step 1: Write the proportion equation
   345,259.50 : 738,492 = 738,492 : x
2. Step 2: Convert to fraction form
   345,259.50/738,492 = 738,492/x
3. Step 3: Cross multiply
   345,259.50x = 738,492 × 738,492
4. Step 4: Simplify right side
   345,259.50x = 545,370,434,064
5. Step 5: Solve for x
   x = 545,370,434,064/345,259.50
6. Step 6: Final answer
   x = 1,579,595.74