Finding the Third Proportional to 57,521.63 and 123,039.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,521.63 : 123,039.75 = 123,039.75 : x
2. Step 2: Convert to fraction form
   57,521.63/123,039.75 = 123,039.75/x
3. Step 3: Cross multiply
   57,521.63x = 123,039.75 × 123,039.75
4. Step 4: Simplify right side
   57,521.63x = 15,138,780,080.06
5. Step 5: Solve for x
   x = 15,138,780,080.06/57,521.63
6. Step 6: Final answer
   x = 263,184.15