Finding the Third Proportional to 392,192 and 830,608

Step by Step Solution

1. Step 1: Write the proportion equation
   392,192 : 830,608 = 830,608 : x
2. Step 2: Convert to fraction form
   392,192/830,608 = 830,608/x
3. Step 3: Cross multiply
   392,192x = 830,608 × 830,608
4. Step 4: Simplify right side
   392,192x = 689,909,649,664
5. Step 5: Solve for x
   x = 689,909,649,664/392,192
6. Step 6: Final answer
   x = 1,759,111.99