Finding the Third Proportional to 612,592 and 1,297,920

Step by Step Solution

1. Step 1: Write the proportion equation
   612,592 : 1,297,920 = 1,297,920 : x
2. Step 2: Convert to fraction form
   612,592/1,297,920 = 1,297,920/x
3. Step 3: Cross multiply
   612,592x = 1,297,920 × 1,297,920
4. Step 4: Simplify right side
   612,592x = 1,684,596,326,400
5. Step 5: Solve for x
   x = 1,684,596,326,400/612,592
6. Step 6: Final answer
   x = 2,749,948.30