Finding the Third Proportional to 343,672 and 746,384

Step by Step Solution

1. Step 1: Write the proportion equation
   343,672 : 746,384 = 746,384 : x
2. Step 2: Convert to fraction form
   343,672/746,384 = 746,384/x
3. Step 3: Cross multiply
   343,672x = 746,384 × 746,384
4. Step 4: Simplify right side
   343,672x = 557,089,075,456
5. Step 5: Solve for x
   x = 557,089,075,456/343,672
6. Step 6: Final answer
   x = 1,620,990.58