Finding the Third Proportional to 74,090 and 158,540

Step by Step Solution

1. Step 1: Write the proportion equation
   74,090 : 158,540 = 158,540 : x
2. Step 2: Convert to fraction form
   74,090/158,540 = 158,540/x
3. Step 3: Cross multiply
   74,090x = 158,540 × 158,540
4. Step 4: Simplify right side
   74,090x = 25,134,931,600
5. Step 5: Solve for x
   x = 25,134,931,600/74,090
6. Step 6: Final answer
   x = 339,248.64