Finding the Third Proportional to 573,418 and 1,215,200

Step by Step Solution

1. Step 1: Write the proportion equation
   573,418 : 1,215,200 = 1,215,200 : x
2. Step 2: Convert to fraction form
   573,418/1,215,200 = 1,215,200/x
3. Step 3: Cross multiply
   573,418x = 1,215,200 × 1,215,200
4. Step 4: Simplify right side
   573,418x = 1,476,711,040,000
5. Step 5: Solve for x
   x = 1,476,711,040,000/573,418
6. Step 6: Final answer
   x = 2,575,278.49