Finding the Third Proportional to 392,064 and 850,510

Step by Step Solution

1. Step 1: Write the proportion equation
   392,064 : 850,510 = 850,510 : x
2. Step 2: Convert to fraction form
   392,064/850,510 = 850,510/x
3. Step 3: Cross multiply
   392,064x = 850,510 × 850,510
4. Step 4: Simplify right side
   392,064x = 723,367,260,100
5. Step 5: Solve for x
   x = 723,367,260,100/392,064
6. Step 6: Final answer
   x = 1,845,023.41