Finding the Third Proportional to 158,840 and 340,712

Step by Step Solution

1. Step 1: Write the proportion equation
   158,840 : 340,712 = 340,712 : x
2. Step 2: Convert to fraction form
   158,840/340,712 = 340,712/x
3. Step 3: Cross multiply
   158,840x = 340,712 × 340,712
4. Step 4: Simplify right side
   158,840x = 116,084,666,944
5. Step 5: Solve for x
   x = 116,084,666,944/158,840
6. Step 6: Final answer
   x = 730,827.67