Finding the Third Proportional to 299,647.69 and 658,342.69

Step by Step Solution

1. Step 1: Write the proportion equation
   299,647.69 : 658,342.69 = 658,342.69 : x
2. Step 2: Convert to fraction form
   299,647.69/658,342.69 = 658,342.69/x
3. Step 3: Cross multiply
   299,647.69x = 658,342.69 × 658,342.69
4. Step 4: Simplify right side
   299,647.69x = 433,415,094,184.72
5. Step 5: Solve for x
   x = 433,415,094,184.72/299,647.69
6. Step 6: Final answer
   x = 1,446,415.61