Finding the Third Proportional to 299,317.50 and 665,064

Step by Step Solution

1. Step 1: Write the proportion equation
   299,317.50 : 665,064 = 665,064 : x
2. Step 2: Convert to fraction form
   299,317.50/665,064 = 665,064/x
3. Step 3: Cross multiply
   299,317.50x = 665,064 × 665,064
4. Step 4: Simplify right side
   299,317.50x = 442,310,124,096
5. Step 5: Solve for x
   x = 442,310,124,096/299,317.50
6. Step 6: Final answer
   x = 1,477,728.91