Finding the Third Proportional to 123,790.50 and 270,342

Step by Step Solution

1. Step 1: Write the proportion equation
   123,790.50 : 270,342 = 270,342 : x
2. Step 2: Convert to fraction form
   123,790.50/270,342 = 270,342/x
3. Step 3: Cross multiply
   123,790.50x = 270,342 × 270,342
4. Step 4: Simplify right side
   123,790.50x = 73,084,796,964
5. Step 5: Solve for x
   x = 73,084,796,964/123,790.50
6. Step 6: Final answer
   x = 590,391.00