Finding the Third Proportional to 30,688 and 63,560

Step by Step Solution

1. Step 1: Write the proportion equation
   30,688 : 63,560 = 63,560 : x
2. Step 2: Convert to fraction form
   30,688/63,560 = 63,560/x
3. Step 3: Cross multiply
   30,688x = 63,560 × 63,560
4. Step 4: Simplify right side
   30,688x = 4,039,873,600
5. Step 5: Solve for x
   x = 4,039,873,600/30,688
6. Step 6: Final answer
   x = 131,643.43