Finding the Third Proportional to 690,720 and 1,066,752

Step by Step Solution

1. Step 1: Write the proportion equation
   690,720 : 1,066,752 = 1,066,752 : x
2. Step 2: Convert to fraction form
   690,720/1,066,752 = 1,066,752/x
3. Step 3: Cross multiply
   690,720x = 1,066,752 × 1,066,752
4. Step 4: Simplify right side
   690,720x = 1,137,959,829,504
5. Step 5: Solve for x
   x = 1,137,959,829,504/690,720
6. Step 6: Final answer
   x = 1,647,498.02