Finding the Third Proportional to 66,056 and 142,480

Step by Step Solution

1. Step 1: Write the proportion equation
   66,056 : 142,480 = 142,480 : x
2. Step 2: Convert to fraction form
   66,056/142,480 = 142,480/x
3. Step 3: Cross multiply
   66,056x = 142,480 × 142,480
4. Step 4: Simplify right side
   66,056x = 20,300,550,400
5. Step 5: Solve for x
   x = 20,300,550,400/66,056
6. Step 6: Final answer
   x = 307,323.34