Finding the Third Proportional to 477,706 and 721,936

Step by Step Solution

1. Step 1: Write the proportion equation
   477,706 : 721,936 = 721,936 : x
2. Step 2: Convert to fraction form
   477,706/721,936 = 721,936/x
3. Step 3: Cross multiply
   477,706x = 721,936 × 721,936
4. Step 4: Simplify right side
   477,706x = 521,191,588,096
5. Step 5: Solve for x
   x = 521,191,588,096/477,706
6. Step 6: Final answer
   x = 1,091,030.02