Finding the Third Proportional to 158,470 and 348,040

Step by Step Solution

1. Step 1: Write the proportion equation
   158,470 : 348,040 = 348,040 : x
2. Step 2: Convert to fraction form
   158,470/348,040 = 348,040/x
3. Step 3: Cross multiply
   158,470x = 348,040 × 348,040
4. Step 4: Simplify right side
   158,470x = 121,131,841,600
5. Step 5: Solve for x
   x = 121,131,841,600/158,470
6. Step 6: Final answer
   x = 764,383.43