Finding the Third Proportional to 56,748 and 123,459

Step by Step Solution

1. Step 1: Write the proportion equation
   56,748 : 123,459 = 123,459 : x
2. Step 2: Convert to fraction form
   56,748/123,459 = 123,459/x
3. Step 3: Cross multiply
   56,748x = 123,459 × 123,459
4. Step 4: Simplify right side
   56,748x = 15,242,124,681
5. Step 5: Solve for x
   x = 15,242,124,681/56,748
6. Step 6: Final answer
   x = 268,593.16