Finding the Third Proportional to 343,380 and 743,962.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,380 : 743,962.50 = 743,962.50 : x
2. Step 2: Convert to fraction form
   343,380/743,962.50 = 743,962.50/x
3. Step 3: Cross multiply
   343,380x = 743,962.50 × 743,962.50
4. Step 4: Simplify right side
   343,380x = 553,480,201,406.25
5. Step 5: Solve for x
   x = 553,480,201,406.25/343,380
6. Step 6: Final answer
   x = 1,611,859.17