Finding the Third Proportional to 299,443.50 and 648,732

Step by Step Solution

1. Step 1: Write the proportion equation
   299,443.50 : 648,732 = 648,732 : x
2. Step 2: Convert to fraction form
   299,443.50/648,732 = 648,732/x
3. Step 3: Cross multiply
   299,443.50x = 648,732 × 648,732
4. Step 4: Simplify right side
   299,443.50x = 420,853,207,824
5. Step 5: Solve for x
   x = 420,853,207,824/299,443.50
6. Step 6: Final answer
   x = 1,405,451.14