Finding the Third Proportional to 69,078 and 147,636

Step by Step Solution

1. Step 1: Write the proportion equation
   69,078 : 147,636 = 147,636 : x
2. Step 2: Convert to fraction form
   69,078/147,636 = 147,636/x
3. Step 3: Cross multiply
   69,078x = 147,636 × 147,636
4. Step 4: Simplify right side
   69,078x = 21,796,388,496
5. Step 5: Solve for x
   x = 21,796,388,496/69,078
6. Step 6: Final answer
   x = 315,533.00