Finding the Third Proportional to 56,931.50 and 123,705.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,931.50 : 123,705.50 = 123,705.50 : x
2. Step 2: Convert to fraction form
   56,931.50/123,705.50 = 123,705.50/x
3. Step 3: Cross multiply
   56,931.50x = 123,705.50 × 123,705.50
4. Step 4: Simplify right side
   56,931.50x = 15,303,050,730.25
5. Step 5: Solve for x
   x = 15,303,050,730.25/56,931.50
6. Step 6: Final answer
   x = 268,797.60