Finding the Third Proportional to 338,412.50 and 722,492

Step by Step Solution

1. Step 1: Write the proportion equation
   338,412.50 : 722,492 = 722,492 : x
2. Step 2: Convert to fraction form
   338,412.50/722,492 = 722,492/x
3. Step 3: Cross multiply
   338,412.50x = 722,492 × 722,492
4. Step 4: Simplify right side
   338,412.50x = 521,994,690,064
5. Step 5: Solve for x
   x = 521,994,690,064/338,412.50
6. Step 6: Final answer
   x = 1,542,480.52