Finding the Third Proportional to 123,126.50 and 265,087

Step by Step Solution

1. Step 1: Write the proportion equation
   123,126.50 : 265,087 = 265,087 : x
2. Step 2: Convert to fraction form
   123,126.50/265,087 = 265,087/x
3. Step 3: Cross multiply
   123,126.50x = 265,087 × 265,087
4. Step 4: Simplify right side
   123,126.50x = 70,271,117,569
5. Step 5: Solve for x
   x = 70,271,117,569/123,126.50
6. Step 6: Final answer
   x = 570,722.94