Finding the Third Proportional to 70,368 and 147,540

Step by Step Solution

1. Step 1: Write the proportion equation
   70,368 : 147,540 = 147,540 : x
2. Step 2: Convert to fraction form
   70,368/147,540 = 147,540/x
3. Step 3: Cross multiply
   70,368x = 147,540 × 147,540
4. Step 4: Simplify right side
   70,368x = 21,768,051,600
5. Step 5: Solve for x
   x = 21,768,051,600/70,368
6. Step 6: Final answer
   x = 309,345.89