Finding the Third Proportional to 123,742.69 and 237,643.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,742.69 : 237,643.88 = 237,643.88 : x
2. Step 2: Convert to fraction form
   123,742.69/237,643.88 = 237,643.88/x
3. Step 3: Cross multiply
   123,742.69x = 237,643.88 × 237,643.88
4. Step 4: Simplify right side
   123,742.69x = 56,474,611,325.02
5. Step 5: Solve for x
   x = 56,474,611,325.02/123,742.69
6. Step 6: Final answer
   x = 456,387.46