Finding the Third Proportional to 123,238.13 and 265,156.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,238.13 : 265,156.88 = 265,156.88 : x
2. Step 2: Convert to fraction form
   123,238.13/265,156.88 = 265,156.88/x
3. Step 3: Cross multiply
   123,238.13x = 265,156.88 × 265,156.88
4. Step 4: Simplify right side
   123,238.13x = 70,308,168,359.77
5. Step 5: Solve for x
   x = 70,308,168,359.77/123,238.13
6. Step 6: Final answer
   x = 570,506.64