Finding the Third Proportional to 729,144 and 1,123,200

Step by Step Solution

1. Step 1: Write the proportion equation
   729,144 : 1,123,200 = 1,123,200 : x
2. Step 2: Convert to fraction form
   729,144/1,123,200 = 1,123,200/x
3. Step 3: Cross multiply
   729,144x = 1,123,200 × 1,123,200
4. Step 4: Simplify right side
   729,144x = 1,261,578,240,000
5. Step 5: Solve for x
   x = 1,261,578,240,000/729,144
6. Step 6: Final answer
   x = 1,730,218.23